Tweco Victor Torch Handles,Cutting Attachments User Manual [en, es, fr]

Torch Handles,

Cutting Attachments,

and Heating Nozzles

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Safety and Operating

Instructions

Issue Date: May 14, 2008Revision: C Form No.: 0056-0138

We appreciate your business!

Congratulations on your new Victor® product. We are proud to have you as our customer
and will strive to provide you with the best service and reliability in the industry. This
product is backed by our extensive warranty and worldwide service network. To
locate your nearest distributor or service agency, please contact a representative at
the address and phone number in your area listed on the inside back cover of this
manual, or visit us on the web at www.victorequip.com.

This Operating Manual has been designed to instruct you on the correct use and
operation of your Victor® product. Your satisfaction with this product and its safe
operation is our ultimate concern. Therefore, please take the time to read the entire
manual, especially the Safety Precautions. They will help you to avoid potential hazards
that may exist when working with this product.

you are in GooD coMpany!

The Brand of Choice for Contractors and Fabricators Worldwide.

Victor® is a Global Brand of gas equipment products for Thermadyne Industries, Inc.
We manufacture and supply to major welding and cutting industry sectors worldwide,
including: Manufacturing, Construction, Mining, Automotive, Aerospace, Engineering,
Rural and DIY/Hobbyist, Scrap, Demolitions and Shipyards.

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competitive prices, excellent delivery, superior customer service and technical support,
together with excellence in sales and marketing expertise.

Above all, we are committed to develop technologically advanced products to achieve
a safer working environment within the welding industry.

WARNING

Read and understand this entire manual and your employer’s safety practices
before installing, operating, or servicing the equipment. While the information
contained in this manual represents the Manufacturer’s judgment, the
Manufacturer assumes no liability for its use.

Torch Handles, Cutting Attachments, and Heating Nozzles
Safety and Operating Instructions
Part Number 0056-0138

Published by:
Thermadyne® Industries, Inc.
2800 Airport Rd.
Denton, TX. 76208
[phone]

www.victorequip.com

U.S. Customer Care: [phone]
International Customer Care: [phone]

Copyright © 2008 Thermadyne Industries, Inc. All rights reserved.

Reproduction of this work, in whole or in part, without written permission of the publisher is
prohibited.

The publisher does not assume and hereby disclaims any liability to any party for any
loss or damage caused by any error or omission in this Manual, whether such error
results from negligence, accident, or any other cause.

Publication Date: March 18, 2008

Record the following information for Warranty purposes:

Where Purchased: _______________________________________________
Purchase Date: _________________________________________________
Equipment Serial #: ______________________________________________

i

Table of Contents

SECTION 1: INTRODUCTION ....................................................... 1-1

SECTION 2: GENERAL SAFETY INFORMATION ...........................2-2

2.01 Fire Prevention ..................................................2-2

2.02 Housekeeping .................................................... 2-3

2.03 Ventilation ........................................................2-3

2.04 Personal Protection ..........................................2-3

2.05 Compressed Gas Cylinders ...............................2-4

SECTION 3: TORCH HANDLES ..................................................... 3-5

3.01 Welding Preparation .......................................... 3-5

3.02 Welding Setup ...................................................3-7

3.03 Welding Operation ............................................. 3-8

3.04 Welding or Heating Completion ......................... 3-9

SECTION 4: CUTTING ATTACHMENT .........................................4-10

4.01 Cutting Preparation ......................................... 4-10

4.02 Cutting Completion .......................................... 5-13

SECTION 5: CHECK VALVES AND FLASH ARRESTORS ..............5-13

5.01 Reverse Flow Check Valves .............................5-13

5.02 Flashback Arrestors ......................................... 5-14

5.03 Leak Testing .................................................... 5-15

SECTION 6: WELDING NOZZLES ................................................6-16

SECTION 7: SPECIFICATIONS ....................................................7-17

SECTION 8: STATEMENT OF WARRANTY .................................. 8-22

ii

SECTION 1:

INTRODUCTION

This booklet is a guide to the safe and efficient operation of apparatus
used in oxy-fuel applications. If the apparatus is not used in an oxy­fuel application, the operator must still follow safety and operating
procedures that apply. Usage presents several potential hazards. Read
this booklet thoroughly and carefully before operating this equipment.

All operations should conform to applicable Federal, State, County, or
City regulations for installation, operation, ventilation, fire prevention,
and protection of personnel. ANSI Standard Z49.1, “Safety in Welding
and Cutting" contains detailed safety instructions. It is available from the
American Welding Society, P.O. Box 351040, Miami, FL 33135.

A system of notes, cautions, and warnings emphasize important safety
and operating information in this booklet:

NOTE

Conveys installation, operation, or maintenance information which
is important but not hazard-related.

CAUTION

Caution indicates a potentially hazardous situation which, if not
avoided, may result in injury.

WARNING

WARNING

avoided, could result in death or serious injury.

DO NOT

and understand all safety and operating instructions provided. For
your safety, practice the safety and operating procedures described
in this booklet every time you use the apparatus. Deviating from
these procedures may result in fire, explosion, property damage
and/or operator injury. If at any time the apparatus you are using
does not perform in its usual manner, or you have any difficulty in
the use of the apparatus, STOP using it immediately. DO NOT use
the apparatus until the problem has been corrected!

indicates a potentially hazardous situation which, if not

WARNING

attempt to use this apparatus until you thoroughly read

1-1

WARNING

Service or repair of apparatus should be performed only by a
qualified repair technician capable of servicing gas apparatus in
strict accordance to applicable Part and Service bulletins for Victor

®

manufactured products. Improper service repair, or modification of
the product could result in damage to the product or injury to the
operator. Improper service repair, USE OF NON-GENUINE VICTOR

®

PARTS, or modification could result in damage to the product or

injury to the operator.

WARNING

This product contains chemicals, including lead, or otherwise
produces chemicals known to the State of California to cause cancer,
birth defects and other reproductive harm. Wash hands after

handling. (California Health & Safety Code § 25249.5 et seq.)

SECTION 2:

GENERAL SAFETY INFORMATION

Read and understand all safety and operating instructions provided before
using this apparatus. RETAIN THESE INSTRUCTIONS IN A READILY

AVAILABLE LOCATION FOR FUTURE REFERENCE.

2.01 FIRE PREVENTION

Welding and cutting operations use fire or combustion as a basic tool. The
process is very useful when properly controlled. However, it can be extremely
destructive if not performed correctly in the proper environment.

1. The work area must have a fireproof floor.

2. Work benches or tables used during welding or cutting operations
must have fireproof tops.

3. Use heat resistant shields or other approved material to protect
nearby walls or unprotected flooring from sparks and hot metal.

4. Keep an approved fire extinguisher of the proper size and type
in the work area. Inspect it regularly to ensure that it is in proper
working order. Know how to use the fire extinguisher.

2-2

5. Move combustible materials away from the work site. If you can
not move them, protect them with fireproof covers.

WARNING

NEVER pe rform welding, heating, or cutting operations
on a container that has held toxic, combustible or flammable
liquids, or vapors. NEVER perform welding, heating, or cutting
operations in an area containing combustible vapors, flammable
liquids, or explosive dust.

2.02 HOUSEKEEPING

WARNING

NEVER allow oxygen to contact grease, oil, or other flammable
substances. Although oxygen by itself will not burn, these
substances become highly explosive. They can ignite and burn
violently in the presence of oxygen.

Keep ALL apparatus clean and free of grease, oil, and other flammable
substances.

2.03 VENTILATION

WARNING

Adequately ventilate welding, heating, and cutting work areas
to prevent accumulation of explosive or toxic concentrations
of gases. Certain combinations of metals, coatings, and gases
generate toxic fumes. Use respiratory protection equipment in these
circumstances. When welding/brazing, read and understand the
Material Safety Data Sheet for the welding/brazing alloy.

2.04 PERSONAL PROTECTION

Gas flames produce infrared radiation which may have a harmful effect on
the skin and especially on the eyes. Select goggles or a mask with tempered
lenses, shaded 4 or darker, to protect your eyes from injury and provide
good visibility of the work.

2-3

Always wear protective gloves and flame-resistant clothing to protect skin and
clothing from sparks and slag. Keep collars, sleeves, and pockets buttoned. DO
NOT roll up sleeves or cuff pants.

When working in a non-welding or cutting environment, always wear
suitable eye protection or face shield. Practice the following safety and
operation precautions EVERY TIME you use pressure regulation equipment.
Deviation from the following safety and operation instructions can result in
fire, explosion, damage to equipment, or injury to the operator.

2.05 COMPRESSED GAS CYLINDERS

The Department of Transportation (DOT) approves the design and
manufacture of cylinders that contain gases used for welding or cutting
operations.

1. Place the cylinder (Figure 1) where you will use it. Keep the cylinder
in a vertical position. Secure it to a cart, wall, work bench, post, etc.

WARNING

Cylinders are highly pressurized. Handle with care. Serious
accidents can result from improper handling or misuse of
compressed gas cylinders DO NOT drop the cylinder, knock it
over, or expose it to excessive heat, flames or sparks. DO NOT
strike it against other cylinders. Contact your gas supplier or refer
to CGA P-1 “Safe Handling of Compressed Gases in Containers”
publication.

NOTE

CGA P-1 publication is available by writing the Compressed Gas
Association, 4221 Walney Road, 5th Floor, Chantilly.VA 20151­2923

2. Place the valve protection cap on the cylinder whenever moving
it, placing it in storage, or not using it. Never drag or roll cylinders
in any way. Use a suitable hand truck to move cylinders.

3. Store empty cylinders away from full cylinders. Mark them “EMPTY”
and close the cylinder valve.

4. NEVER use compressed gas cylinders without a pressure reducing
regulator attached to the cylinder valve.

5. Inspect the cylinder valve for oil, grease, and damaged parts.

2-4

Figure 1: Gas Cylinders

WARNING

use the cylinder if you find oil, grease or damaged parts.

DO NOT

Inform your gas supplier of this condition immediately.

6. Momentarily open and close (called “cracking”) the cylinder valve
to dislodge any dust or dirt that may be present in the valve.

CAUTION

Open the cylinder valve slightly. If you open the valve too much,
the cylinder could tip over. When cracking the cylinder valve, DO
NOT stand directly in front of the cylinder valve. Always perform
cracking in a well-ventilated area. If an acetylene cylinder sprays
a mist when cracked, let it stand for 15 minutes. Then, try to
crack the cylinder valve again. If this problem persists, contact

your gas supplier.

SECTION 3:

TORCH HANDLES

3.01 WELDING PREPARATION

1. Be certain cylinder valves and regulator connections are completely
free of dirt, dust, oil, or grease.If oil, grease, or damage is detected
on the cylinder valves, DO NOT use the cylinder. Notify the cylinder
supplier immediately.If oil, grease, or damage is detected on the

3-5

regulator, DO NOT use the regulator. Have the regulator cleaned
or repaired by a qualified repair technician.

2. Connect the oxygen hose to the oxygen regulator. Tighten the
connection firmly with a wrench.

3. Always open the cylinder valves slowly and carefully and check for
leaks on the regulator and cylinder valve connections.

4. Momentarily open and close the cylinder valve (commonly referred
to as “cracking”). This dislodges any loose contaminants that may
be present.

CAUTION

Open the cylinder valve only slightly. If the valve is opened too
much the cylinder could tip over. When “cracking” the cylinder
valve, DO NOT stand, nor have anyone stand directly in front of
the valve opening. Stand behind or to one side. Crack the cylinder
valve in a well-ventilated area only. If an acetylene cylinder sprays
a mist when it is cracked, let it set for 30 minutes. Then try to
crack the cylinder valve again. If the problem persists, contact
your gas supplier.

WARNING

Never stand, nor have anyone stand in front or behind a regulator
when opening the cylinder valve. Always stand so that the cylinder
is between you and the regulator.

5. Adjust the oxygen regulator to allow 3 - 5 PSIG to pass through the
hose. Allow oxygen to flow for 5 - 10 seconds to clear the hose of
dust, dirt, or preservatives. Shut off the oxygen flow.

6. Attach and clear the fuel hose in the same manner.

WARNING

Clear hoses in a well-ventilated area. The escaping gases create
conditions for fires and explosions. Keep hoses clear of any falling
metal, slag, or sparks. Never allow hoses to become coated with
oil, grease, or dirt. This could conceal damaged areas on the hoses.
Examine the hoses before attaching the torch handle or regulators.
If any cuts,burns, worn areas, cracks, or damaged fittings are found,
repair or replace the hose.

3-6

7. Inspect the torch handle head, valves, and hose connections for oil,
grease, or damaged parts. Inspect the hose connections in the same
manner. DO NOT use them if oil, grease, or damage is detected.

8. Inspect the torch handle. The tapered seating surfaces in the head
must be in good condition. If dents or burned seats are present,
the seat must be resurfaced. If the torch handle is used with poor
seating surfaces, backfire may occur.

9. Using a 3/4" open-end wrench, check the flashback arrestors
to make sure they are tight. If loose, a flashback may have
occurred.

10. Attach the hose to the torch handle and tighten securely with a
wrench.

3.02 WELDING SETUP

1. Check the thickness of the metals to be welded. Prepare the metal
as described. Refer to the welding tip selection chart to determine
the tip size that is required and the regulator pressures for the
job.

2. Open the oxygen valve on the torch handle and adjust the oxygen
regulator to the required delivery range. Then close the torch handle
oxygen control valve to purge the oxygen hose.

3. Open the fuel valve on the torch handle and adjust the fuel regulator
to the required delivery range. Then close the torch handle fuel
control valve to purge the fuel hose.

WARNING

If the torch handle and hoses are already connected to the
regulators, the system MUST still be purged after every shutdown
in a well-ventilated area. Open the oxygen valve 1/2 turn. Allow the
gas to flow ten seconds for tips up to a size three and five seconds
for sizes 4 and larger for each 25 feet of hose in the system. Close
the oxygen valve and purge the fuel system in the same manner.

4. Wear the recommended protective goggles (shaded 5 or darker)
with tempered lenses to shield your eyes from the light. Wear
protective clothing as required.

3-7

NOTE

The following instructions cover torch adjustment procedures for
acetylene only. Contact your gas supplier for instructions on the
use of other fuel gases.

5. Hold the torch in one hand and the spark lighter in the other. Be
sure the spark lighter is away from the tip and not obstucting the
gas flow.

6. Open the torch fuel valve approximately 1/8 turn and ignite the
gas.

CAUTION

Point the flame away from people, equipment, and all flammable
materials.

7. Continue opening the fuel valve until the flame stops smoking.

8. Open the torch oxyen valve until a bright neutral flame is
established.

WARNING

If you experience a sustained backfire (a shrill hissing sound when
the flame is burning inside the nozzle), immediately turn off the
oxygen valve on the torch handle. Then, turn off the fuel valve.
Allow the torch and nozzle time to cool before attempting to reuse.
If backfire recurs, take the apparatus to a qualified repair technician
for repair before using the equipment again.

3.03 WELDING OPERATION

1. Clean the metal joints to be welded from all scale, rust, dirt, paint,
grease, and all foreign materials.

2. Some thicker metals may require additional preparation. Base
metals 1/8" or less do not require beveling.

3. Place the metal to be welded on a non-flammable work table and
determine where the tacking will be required.

4. Begin by tacking the ends of the two pieces of metal together before
welding. Longer pieces may need to be tacked every few inches
along the joint.

3-8

5. Longer pieces may also require additional penetration gap, VICTOR®
recommends 1/16" - 1/8".

6. Hold the torch nozzle at an angle of approximately 45° to the
joint.

7. Move the torch nozzle over the starting edges of the joint. Rotate
the flame near the metal in a circular or semicircular motion until
the base metals run into a small puddle.

8. Dip the end of the filler rod in and out of the molten puddle, this
melts the rod and adds to the puddle.

9. Continue the dipping motion of the filler rod into the puddle. Then
move the torch back and forth across the joint.

10. Advance the torch nozzle at a rate of approximately 1/16" of the
filler rod as it is added to the puddle until the end of the joint is
achieved.

3.04 WELDING OR HEATING COMPLETION

1. Shut off the torch oxygen valve. Then, shut off the torch fuel valve.
Be careful not to shut off the fuel valve first; this may create a “pop”
type sound. When the “pop” happens it throws carbon soot back
into the torch and may in time partially clog gas passages and the
flashback arrestors.

2. Close both cylinder valves.

3. Open the torch handle oxygen valve. Release the pressure from
the system and then close the torch oxygen valve.

4. Turn the adjusting screw on the oxygen regulator counterclockwise
to release all spring pressure.

5. Open the torch handle fuel valve and release the pressure from the
system. Close the torch fuel valve.

6. Turn the adjusting screw on the fuel gas regulator counterclockwise
to release all spring pressure.

7. Check the inlet gauges after a few minutes to ensure the cylinder
valves are turned off completely and there is no pressure remaining

in the system.

3-9

SECTION 4:

CUTTING ATTACHMENT

4.01 CUTTING PREPARATION

1. Inspect the cone end, coupling nut, and torch head for oil, grease, or
damaged parts. Also inspect the cone end for missing or damaged
O-rings.

WARNING

If you find oil, grease, or damage, DO NOT use the apparatus until
it has been cleaned or repaired by a qualified repair technician.
The two O-rings on the cone end must be in place and in good
condition. The absence of either of these O-rings allows pre-mixing
of oxygen and fuel gases. This can lead to a sustained backfire
within the torch handle and cutting attachment.

2. Inspect the cutting tip and cutting attachment head. All tapered
seating surfaces must be in good condition. Discard damaged
cutting tips. If you find dents, burns, or burned seats, resurface
the torch head. If you use the cutting attachment with poor seating
surfaces, a backfire or sustained backfire may occur.

WARNING

If the tapered seats on the cutting tip are damaged, DO NOT use
the tip. Poor seating surfaces may cause a backfire or sustained
backfire.

3. Inspect the preheat and cutting oxygen holes on the tip. Slag can
stick on or in these holes. If the holes are clogged or obstructed,
clean them out with the proper size tip cleaner.

4. Insert the tip into the cutting attachment head. Tighten the tip nut
securely with a wrench (15 - 20 lbs. torque).

5. Connect the cutting attachment to the torch handle and tighten
the coupling nut until it is hand tight. DO NOT use a wrench, as
damage to the O-rings may occur creating a faulty seal.

6. Refer to the Tip Flow Data Charts for correct cutting tip, regulator
pressures, and travel speed.

4-10

7. Follow cylinder and regulator safety and operating procedures.

8. Open the oxygen valve on the torch handle completely.

9. Open the preheat oxygen control valve on the cutting attachment
and adjust the oxygen regulator to the desired delivery pressure.
This will purge the oxygen hose.

10. Close the preheat oxygen control valve.

11. Open the fuel valve on the torch handle and adjust the fuel regulator
delivery range. This will purge the fuel hose.

12. Close the fuel control valve on the torch handle.

13. Momentarily depress the cutting oxygen lever to purge the cutting
oxygen passage in the cutting attachment.

WARNING

If the torch handle and hoses are already connected to the
regulators, the system MUST still be purged after each shutdown.
Open the oxygen valve 1/2 turn. Allow the gas to flow ten seconds
for tips up to size 3, and five seconds for sizes 4 and larger for
each 25 feet of hose in the system. Close the oxygen valve and
purge the fuel system in the same manner.

NOTE

Always wear protective clothing and proper goggles to shield your
eyes from infrared light.

14. Open the fuel valve on the torch handle approximately 1/8 turn
and ignite the gas with a spark lighter. Be sure the spark lighter is
away from the tip and not obstructing the gas flow.

15. Continue to increase the fuel supply at the torch handle until the
flame stops smoking.

16. Slowly open the preheat oxygen control valve on the cutting
attachment until the preheat flame is established with a smooth
inner cone.

17. Depress the cutting oxygen lever. If necessary, readjust the preheat
flames slightly to a neutral flame by increasing the preheat oxygen
at the cutting attachment until the preheat flames are again neutral.
If the preheat flames are not the same size and the cutting oxygen
is not straight, turn off the torch and let it cool, then clean the tip.

4-11

WARNING

Never open and light the fuel gas torch and oxygen at the same
time.

WARNING

If you experience a sustained backfire (flame disappears and/or a
shrill hissing sound is heard caused by the flame burning inside the
cutting attachment), immediately turn off the preheat oxygen control
valve on the cutting attachment. Then turn off the torch handle fuel
valve. Allow the cutting attachment to cool before attempting to
relight. If backfire recurs, have the apparatus checked by a qualified
repair technician before using the apparatus again.

NOTE

Inspect the areas where slag and sparks will fall. Serious fires
and explosions are caused by careless torch operations. Take all
possible precautions. Have fire extinguishers available. Remove or
protect flammable substances, including oxygen and fuel hoses,
before starting to work.

18. Hold the cutting attachment and torch handle comfortably in both
hands. Stabilize the torch and position the cutting tip preheat flames
approximately 1/4" from the base metal.

19. Direct the preheat flame to the spot where the cut is to begin.
Before the cutting action can start, preheat the starting point of
the metal to a bright cherry red kindling temperature. When the red
spot appears, depress the cutting oxygen lever slowly and fully.

20. When the cut starts, move the torch in the direction you wish to
cut.

NOTE

Moving too slowly allows the cut to fuse together. Moving too fast
will not preheat the metal and the cut will be lost.

21. Continue to fully depress the cutting oxygen lever until the cutting
oxygen stream is past the base metal for a good drop cut.

4-12

4.02 CUTTING COMPLETION

1. Shut off the oxygen preheat valve. Then, close the torch fuel valve.
Be careful not to shut off the fuel valve first, this may create a “pop"
type sound. When the “pop” happens it throws carbon soot back
into the torch and may in time partially clog gas passages and the
flashback arrestors.

2. Close both cylinder control valves on the gas source supply.

3. Open the oxygen valve and depress the cutting oxygen lever.
Release the pressure from the system and then close the oxygen
preheat and the torch handle oxygen control valve.

4. Turn the adjusting screw on the oxygen regulator counterclockwise
to release all spring pressure.

5. Open the torch fuel control valve and release the pressure from
the system. Close the fuel valve.

6. Turn the adjusting screw on the fuel gas regulator counterclockwise
to release all spring pressure.

7. Check the inlet gauges after a few minutes to ensure the cylinder
valves are turned off completely and no pressure remains in the
system.

8. Remove slag left on the cut edge with a chipping hammer or brush.
Never remove slag from the cut edge with the torch head or cutting

tip.

SECTION 5:

CHECK VALVES AND FLASH ARRESTORS

5.01 REVERSE FLOW CHECK VALVES

The body “Y” has two control valves attached to it. The valve bodies are
marked to distinguish between the two valves. The body of one valve has
left-hand threads to accept the fuel gas hose. The other valve body has
right-hand threads to accept the oxygen hose. The control valves never
require lubricating. Occasionally, the packing nuts may require a slight
adjustment.

Most VICTOR® torch handles are equipped with patented built-in reverse
flow check valves to reduce the possibility of mixing gases in the hoses
and regulators.

5-13

CAUTION

Check valves are mechanical devices that can leak when dirty
or if abused. Check valves should be tested at least every six
months, more often if hoses are frequently disconnected. Careless
usage, dirt or abuse can shorten the service life of check valves,
thus requiring more frequent testing. Follow the manufacturer’s
instructions for testing the check valves.

NOTE

Reverse flow check valves are not the same as flashback arrestors.
Check valves are designed to help prevent reverse flow of gas
upstream of the torch. Flashback arrestors are designed to prevent
mixed gases from igniting upstream of the flashback arrestors.

5.02 FLASHBACK ARRESTORS

NOTE

VICTOR® torch handle model numbers that contain the letters
“FC” are equipped with built-in flashback arrestors and check
valves (i.e. 315FC). Model numbers with a “C” only contain built-in
check valves (i.e. 315C). Earlier versions without an “F” or “C” in
the model number contained neither (i.e. 315). For all “C” model
torch handles and earlier versions, it is recommended that add-on
flashback arrestors be installed. Most add-on flashback arrestors
also contain built-in check valves.

Most VICTOR® torch handles are equipped with built-in flashback arrestors.
Flashback arrestors are designed to prevent mixed gases from igniting
upstream of the flashback arrestors.

CAUTION

It is not recommended to use accessory flashback arrestors on
VICTOR® FC torch handles since these devices are already built-in.
Excessive flow restrictions may occur.

The flashback arrestors contained in this torch are designed to prevent a
flashback flame from entering the hose and gas supply system. A very fine
“filter-like” sintered stainless steel flame barrier stops flashback flame.

For maximum service life of the flashback arrestor, completely purge
all lines and hoses before connecting to the torch. This removes loose

5-14

material contained in the hose or regulator that could restrict flow through
the flashback arrestor.

Flow restriction and torch overheating results if dirt or “oily” LPG residuals
are allowed to flow into the flashback arrestor and cause clogging. Make
sure not to draw liquid.

Always store and use cylinders in the upright position.

5.03 LEAK TESTING

The system MUST be tested for leaks before lighting the torch. To leak test
the system perform the following steps.

1. Be sure that both the oxygen and fuel control valves on the torch
handle are closed.

2. With the oxygen cylinder valve open, adjust the oxygen regulator
to deliver 20 PSIG.

3. With the fuel cylinder valve open, adjust the fuel regulator to deliver
10 PSIG.

4. Close both the oxygen and fuel cylinder valves.

5. Turn the adjusting screws counterclockwise 1/2 turn.

6. Observe the gauges on both regulators for five minutes. If the gauge
readings do not change, then the system is leak tight. If there is
a leak, use an approved leak detection solution to locate it. If the
inlet gauge reading decreases, there is a leak at the cylinder valve
or inlet connection. Tighten the inlet connection after the pressure
has been released from the regulator. If the inlet connection still
leaks try another cylinder. If the same leak develops, take the
regulator to a qualified repair technician. Never tighten a cylinder
valve. If the cylinder valve is leaking, remove the regulator from the
cylinder, place the cylinder outdoors and notify your gas supplier
immediately. If the delivery gauge reading decreases, there is a
leak at the regulator outlet connection, within the hose, at the
torch inlet connection or at the control valves on the torch handle.
Tighten the regulator outlet connection and the torch handle inlet
connection after the pressure has been released from the system. If
the connections are still leaking, take the regulator or torch handle
to a qualified repair technician. If the hoses are leaking, replace
them. If the high pressure gauge drops and at the same time the

5-15

delivery gauge rises, there is a leak in the regulator seat. Take the
regulator to a qualified repair technician for repair.

7. After leak testing the system, open the cylinder valves and
proceed.

WARNING

If a leak has been detected anywhere in the system, discontinue
use and have the system repaired. DO NOT use leaking equipment.
Do not attempt to repair a leaking system while the system is under
pressure. Perform all operations in a well-ventilated area to help

prevent the concentration of flammable or toxic fumes.

SECTION 6:

WELDING NOZZLES

1. Inspect the cone end, coupling nut, O-rings, and welding nozzle
for damage, oil or grease. Do not use if damage or contaminants
are present.

WARNING

There must always be two O-rings on the cone end. The absence or
damage of either of these O-rings allows premixing of the oxygen
and fuel gases. This can lead to a sustained backfire within the
torch handle.

2. Connect the welding nozzle to the torch handle. Tighten the coupling
nut HAND TIGHT only. Using a wrench could damage the O-rings
and create a faulty seal.

MULTI-FLAME HEATING NOZZLES (ROSEBUDS)

Multi-flame heating nozzles are set up exactly as the welding nozzle.
Follow the safety and operation procedures described above for the
welding nozzle.

CAUTION

Never starve or choke a welding nozzle or multi-flame heating
nozzle. This causes overheating of the nozzle and a backfire or
sustained backfire may result. Should a sustained backfire occur
(flame pops and disappears and/or a hissing sound is heard, the
flame is burning inside the nozzle), immediately turn off the oxygen

6-16

valve on the torch handle. Then, turn off the fuel valve. Allow the
nozzle to cool before using it. If a backfire reoccurs, have the

apparatus checked by a qualified technician before using again.

SECTION 7:

SPECIFICATIONS

WELDING NOZZLE FLOW DATA

Oxygen

Pressure

Metal

Thickness

Up to 1/32" 000 75 (.022) 3 5 3 5 1 2
1/16" - 3/64" 00 70 (.028) 3 5 3 5 1 1/2 3
1/32" - 5/64" 0 65 (.035) 3 5 3 5 2 4
3/64" - 3/32" 1 60 (.040) 3 5 3 5 3 6

1/16" - 1/8" 2 56 (.046) 3 5 3 5 5 10
1/8" - 3/16" 3 53 (.060) 4 7 3 6 8 18
3/16" - 1/4" 4 49 (.073) 5 10 4 7 10 25

1/4" - 1/2" 5 43 (.089) 6 12 5 8 15 35

1/2" - 3/4" 6 36 (.106) 7 14 6 9 25 45

3/4" - 1 1/4" 7 30 (.128) 8 16 8 10 30 60

1 1/4" - 2" 8 29 (.136) 10 19 9 12 35 75
2 1/2" - 3" 10 27 (.144) 12 24 12 15 50 100
3 1/2" - 4" 12* 25 (.149) 18 28 12 15 80 160

Tip

Size

Drill Size

(PSIG)

Min Max Min Max Min Max

Acetylene

Pressure

(PSIG)

Acetylene

Consumption

(SCFH)

7-17

MFA HEATING NOZZLES

Acetylene

Cubic Feet

per Hour

Acetylene

Tip

Pressure Range

Size

4 6 -10 8 - 12 6 20 7 22
6 8 -12 10 - 15 14 40 15 44
8 10 - 15 20 - 30 30 80 33 88

10 12 - 15 30 - 40 40 100 44 110
12* 12 - 15 50 - 60 60 150 66 165
15* 12 - 15 50 - 60 90 220 99 244

(PSIG)

At no time should the withdrawal rate of an individual acetylene cylinder exceed
1/7 of the cylinder contents per hour. If additional flow capacity is required, use an
acetylene manifold system of sufficient size to supply the necessary volume.

Oxygen

Pressure

Range
(PSIG)

Min Max Min Max

WARNING

Oxygen

Cubic Feet per

Hour

TYPE 55 NOZZLES

Not For Use With Acetylene

Oxygen

Tip

Pressure

Size

(PSIG)

10* 70 - 100 15 - 25 350 - 460 150 - 200
15* 90 - 120 20 - 35 600 - 800 250 - 350
20* 100 - 150 30 - 50 900 - 1150 400 - 500

*Use model HD310C torch and 3/8" hose.

Fuel Gas
Pressure

(PSIG)

Consumption (SCFH)

Oxygen

Fuel Gas BTU Hour

BTU

per

Hour

See
Note,
page

23

See Note,

page 23

7-18

MFN HEATING NOZZLES

Propane Cubic

Propane

Tip

Pressure

Range

Size

(PSIG)

8 10-15 10-20 10 35 40 140

10 12-20 10-30 20 80 80 320
12* 15 - 25 30 - 125 30 160 120 640
15* 15 - 25 30 - 125 50 200 200 800
20* 20 - 30 40 - 135 75 250 300 1000

*Use model HD310C torch and 3/8" hose.

Oxygen

Pressure

Range

(PSIG)

Feet per Hour

Min Max Min Max

Oxygen Cubic
Feet per Hour

BTU per

Hour

See
Note,
page

23

TYPES 1-101, 3-101 (OXY-ACETYLENE)

Cutting Oxygen Acetylene

-

Tip

Size

Pres

sure***

(PSIG)

Flow***

(SCFH)

Metal

Thickness

1/8" 000 20 - 25 20 - 25 3 - 5 3 - 5 6 - 11 20 - 30 .04
1/4" 00 20 - 25 30 - 35 3 - 5 3 - 5 6 - 11 20 - 28 .05
3/8" 0 25 - 30 55 - 60 3 - 5 3 - 5 6 - 11 18 - 26 .06
1/2" 0 30 - 35 60 - 65 3 - 6 3 - 5 9 - 16 16 - 22 .06
3/4" 1 30 - 35 80 - 85 4 - 7 3 - 5 8 - 13 15 - 20 .07

1" 2 35 - 40 140 - 160 4 - 8 3 - 6 10 - 18 13 - 18 .09
2" 3 40 - 45 210 - 240 5 - 10 4 - 8 14 -24 10 - 12 .11
3" 4 40 - 50 280 - 320 5 - 10 5 - 11 18 - 28 10 - 12 .12
4" 5 45 - 55 390 - 450 6 - 12 6 - 13 22 - 30 6 - 9 .15

6" 6** 45 - 55 500 - 600 6 - 15 8 - 14 25 - 35 4 - 7 .15
10" 7** 45 - 55 700 - 850 6 - 20 10 - 15 25 - 35 3 - 5 .34
12" 8** 45 - 55 900 - 1050 7 - 25 10 - 15 25 - 35 3 - 4 .41

* Applicable for three-hose machine cutting torches only. With a two-hose cuting torch,

preheat pressure is set by the cuttting oxygen.

** For best results use HC1200C series torches and 3/8" hose using a size 6 tip or

larger.

*** All pressures are measured at the regulator using 25' x 1/4" hose through tip size 5,

and 25' x 3/8" hose for tip size 6 and larger.

Pre-heat
Oxygen*

(PSIG)

Pres-

sure

(PSIG)

Flow

(SCFH)

Speed

(IPM)

Kerf

Width

7-19

Approximate gross BTU contents per cubic foot:

Acetylene - 1470

•
Butane - 3374

•
Natural Gas - 1000

•
Propane - 2458

•

At no time should the withdrawal rate of an individual acetylene cylinder exceed
1/7 of the cylinder contents per hour. If additional flow capacity is required, use an
acetylene manifold system of sufficient size to supply the necessary volume.

NOTE

•

•

•

WARNING

Mapp - 2406
Methane - 1000
Propylene - 2371

Always make sure your equipment is rated for the size tip you have selected. A tip
with too much capacity for the equipment can starve or choke the tip. This causes
overheating of the head and a backfire may result. Use only genuine VICTOR®,
Cutskill®, or Firepower® cutting tips, welding nozzles and multi-flame nozzles to
ensure leak-free connections and balanced equipment.

CAUTION

TYPES 303M, GPM, GPN, GPP

Cutting Oxygen Pre-Heat Fuel Gas

Metal

Tip

Thickness

1/8" 000 20 - 25 12 - 14
1/4" 00 20 - 25 22 - 26 3 - 5 5 - 7 20 - 28 .05
3/8" 0 25 - 30 45 - 55 3 - 5 8 - 10 18 - 26 .06
1/2" 0 30 - 35 50 - 55 3 - 5 8 - 10 16 - 22 .06
3/4" 1 30 - 35 70 - 80 4 - 6 10 - 12 15 - 20 .08

1" 2 35 - 40 115 - 125 4 - 8 12 - 15 13 - 20 .09

1 1/2" 2 40 - 45 125 - 135 4 - 8 12 - 15 13 - 18 .09

2" 3 40 - 45 150 - 175 5 - 9 14 - 18 11 - 13 .10

2 1/2" 3 45 - 50 175 - 200 5 - 9 14 - 18 10 - 12 .10

3" 4 40 - 50 210 - 250 6 - 10 16 - 20 8 - 10 .12
4" 5 45 - 55 300 - 360 8 - 12 20 - 30 6 - 9 .14
5" 5 50 - 55 330 - 360 8 - 12 20 - 30 4 - 7 .14
6" 6 45 - 55 400 - 500 10 - 15 25 - 35 3 - 5 .17
8" 6 55 - 65 450 - 500 10 - 15 25 - 35 3 - 4 .18

12" 8** 60 - 70 750 - 850 10 - 14 25 - 120 3 - 4 .41

Size

Pressure

*** PSIG

Flow

SCFH

Pre-

Heat

Oxygen

PSIG

Note,
page

Pressure

PSIG

3 - 5 5 - 6 20 - 30 .04

See

23

Flow
SCFH

Speed

IPM

7-20

Kerf

Width

The above data applies to all torches with the following exceptions:

Torch Series Pre-heat Oxygen Pre-heat Fuel

MT 200 Series N/A 8 oz. - Up
MT 300 Series 10-50 PSIG 8 oz. - Up

* Applicable for 3-hose machine cutting torches only. With a two hose cutting torch,

preheat pressure is set by the cuttting oxygen.

** For best results use HC1200C and HC1100C series torches and 3/8" hose when using

a size 6 tip or larger.

*** All pressures are measured at the regulator using 25' x 3/8" hose for tip size 6 and

larger.

High gas withdrawal rates require use of a manifold system of sufficient size to
supply the necessary volume. High gas withdrawal rates may also require use
of a vaporizer.

NOTE:

WARNING

Always make sure your equipment is rated for the size tip you have selected. A tip
with too much capacity for the equipment can starve or choke the tip. This causes
overheating of the head and a backfire may result. Use only genuine VICTOR®,
Cutskill® or Firepower® cutting tips, welding nozzles and multi-flame nozzles to
ensure leak-free connections and balanced equipment.

CAUTION

7-21

SECTION 8:

STATEMENT OF WARRANTY

LIMITED WARRANTY: THERMADYNE® warrants that its products will
be free of defects in workmanship or material. Should any failure to
conform to this warranty appear within the time period applicable to the
THERMADYNE products as stated below, THERMADYNE shall, upon
notification thereof and substantiation that the product has been stored,
installed, operated, and maintained in accordance with THERMADYNE’s
specifications, instructions, recommendations and recognized standard
industry practice, and not subject to misuse, repair, neglect, alteration,
or accident, correct such defects by suitable repair or replacement, at
THERMADYNE’s sole option, of any components or parts of the product
determined by THERMADYNE to be defective.

THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

LIMITATION OF LIABILITY: THERMADYNE shall not under any

circumstances be liable for special or consequential damages, such as,
but not limited to, damage or loss of purchased or replacement goods,
or claims of customers of distributor (hereinafter the “Purchaser") for
service interruption. The remedies of the Purchaser set forth herein are
exclusive and the liability of THERMADYNE with respect to any contract,
or anything done in connection therewith such as the performance
or breach thereof, or from the manufacture, sale, delivery, resale, or
use of any goods covered by or furnished by THERMADYNE whether
arising out of contract, negligence, strict tort, or under any warranty,
or otherwise, shall not, except as expressly provided herein, exceed
the price of the goods upon which such liability is based.

THIS WARRANTY BECOMES INVALID IF REPLACEMENT PARTS OR
ACCESSORIES ARE USED WHICH MAY IMPAIR THE SAFETY OR
PERFORMANCE OF ANY THERMADYNE PRODUCT.

THIS WARRANTY IS INVALID IF THE PRODUCT IS SOLD BY NON­AUTHORIZED PERSONS.

This warranty is effective for the time stated in the Warranty Schedule
beginning on the date that the authorized distributor delivers the
products to the Purchaser.

8-22

Warranty repairs or replacement claims under this limited warranty
must be submitted by an authorized THERMADYNE repair facility within
thirty (30) days of the repair. No transportation costs of any kind will
be paid under this warranty. Transportation charges to send products
to an authorized warranty repair facility shall be the responsibility of
the Purchaser. All returned goods shall be at the Purchaser’s risk
and expense. This warranty supersedes all previous THERMADYNE
warranties.

8-23

Les Chalumeaux, Les

Attachements Coupeurs

et Buses de Chauffage

English

Français

Español

Guide d’installation et

d’utilisation

Date d’émission: 14 Mai 2008Révision: C Nº de document: 0056-0138

VOTRE ACTIVITÉ NOUS INTÉRESSE!

Félicitations pour votre nouveau produit Victor®. Nous sommes fiers de vous avoir
comme client et nous tâcherons de vous fournir les meilleurs services et fiabilité
dans l’industrie. Ce produit est soutenu par une vaste garantie et un réseau mondial
de service. Pour localiser votre distributeur ou agence de service le plus proche,
veuillez communiquer avec un représentant à l’adresse ou au numéro de téléphone
correspondant à votre région, indiqué au verso de la couverture du manuel, ou visitez
notre site web www.victorequip.com.

Ce Manuel d’utilisation a été conçu pour vous permettre d’utiliser et de faire fonctionner
correctement votre produit Victor®. Votre satisfaction et le fonctionnement en toute
sécurité de votre produit sont nos principaux soucis. Par conséquent, veuillez prendre
le temps de lire tout le manuel, spécialement en ce qui concerne les Précautions de
Sécurité. Ceci vous aidera à éviter déventuels accidents qui pourraient survenir en
travaillant avec ce produit.

VOUS ÊTES EN BONNE COMPAGNIE!

La Marque de Choix pour les Entrepreneurs et les Fabricants
dans le Monde.

Victor® est une marque mondialement reconnue pour ses produits d’équipement de
gaz pour Thermadyne Industries, Inc. Nous fabriquons et fournissons dans le monde
entier aux secteurs industriels majeurs de soudage et coupage, incluant fabrication,
construction, exploitation minière, automobile, aérospatiale, ingénierie, rural et
bricolage/hobby, reyclage, démolition et construction navale.

Nous nous distinguons de notre concurrence grâce à nos produits en tête du marché,
fiables, ayant résisté à l’épreuve du temps. Nous sommes fiers de notre innovation
technique, nos prix compétitifs, notre excellente livraison, notre service clientèle et
notre support technique de qualité supérieure, ainsi que de l’excellence dans les
ventes et l’expertise en marketing.

Surtout, nous nous engageons à développer des produits utilisant des technologies
de pointe pour obtenir un environnement de travail plus sécurisé dans l’industrie
de la soudure.