TLV BD800 Instruction Manual
172-65694MA-01 (BD800) 25 July 2018
Bypass Blow Valve
BD800
Copyright © 2018 by TLV CO., LTD.
All rights reserved
1
Contents
Introduction ........................................................................ 1
Safety Considerations ........................................................ 2
Specifications ..................................................................... 4
Configuration ...................................................................... 4
Installation .......................................................................... 5
Operation ........................................................................... 6
Maintenance ....................................................................... 8
Disassembly/Reassembly ................................................ 10
Cleaning the Valve Seat Section ...................................... 13
Troubleshooting ............................................................... 14
Product Warranty ............................................................. 15
Introduction
Thank you for purchasing t he bypass blow valve.
This product has been thoroughly inspected bef or e being shipped from the fac t or y.
When the produc t is delivered, before doing anything else, check t he spec ifications
and external appearance to make sure nothing is out of the ordinary. Also be sure to
read this manual carefully before use and follow the instructions to be sure of using
the product properly.
The
performance in addition to a structure which can clean its seating surfaces in a
simple operation. In support of t his long-life product, the m ain components of the
valve are replaceable.
In conventional valves, when dust or scale adheres to the seating surf ace of the
valve seat section, leakage occurs eventually leading to erosion, and ultimately the
valve will no longer function properly.
This bypass blow valve utilizes a special material for the valve stem and valve seat
sections and together with its unique f or m , rotational contact between the seating
surfaces scrapes off scale and restores the sealing performance of the valve.
The proven special material, combined with the unique cleaning mechanism reduces
the burden of valve maintenance and operation.
If detailed instructions f or spec ial order spec ifications or options not contained in this
manual are required, please contact
bypass blow valve has excellent durability and reliable sealing
for full details.
This instruction manual is intended for use with the m odel(s ) l ist ed on t he front cover.
It is necessary not only for installation but f or subs equent maintenance,
disassembly/reassembly and troubleshooting. Please keep it in a safe place for
future referenc e.
172-65694MA-01 (BD800) 25 Jul 2018
2
DANGER
Indicates an urgent situation which poses a threat of death or
serious injury
WARNING
CAUTION
Indicates that there is a possibility of injury or equipment/product
damage
WARNING
DO NOT use for any other fluids than applicable flui ds. DO
or malfunctions that may lead to serious accident s .
CAUTION
Install properly and DO NOT use this product outside the
conditions quoted.
Take measures to prevent people from coming into direct
discharge of fluids.
Safety Considerations
• Read this section carefully before use and be sure to follow the instructions.
• Installation, inspection, maintenance, repairs, disassembly, adjust m ent and valve
opening/closing should be carried out only by trained maintenance personnel.
• The precautions listed in this manual are designed to ensure saf et y and prevent
equipment damage and personal injury. For sit uations that may occur as a result
of erroneous handling, three different types of caut ionar y items are used to
indicate the degree of urg ency and the scale of potential damage and danger:
DANGER, WARNING and CAUTI ON.
• The three types of cautionary items above are very important for safety: be sure to
observe all of them as they relate to installation, use, maintenance, and repair.
Furthermore, TLV accepts no r es ponsibility f or any accident s or damage occurring
as a result of failure to obser ve these pr ec aut ions.
Symbols
Indicates a DANGER, WARNING or CAUTION item.
Indicates that there is a potential thr eat of death or serious injury
NOT use for toxic, flammable or other wise hazardous fluids.
This product is for intended use only.
Improper use may result in such hazards as damage t o t he pr oduc t
recommended operating pressure, temperat ur e and ot her
specification ranges.
Improper use may result in such hazards as damage t o t he pr oduc t
or malfunctions that may lead to serious accident s . Local
regulations may restrict the use of this product to below the
contact with product out lets.
Failure to do so may result in burns or other injury from the
Safety considerations continued on next page
172-65694MA-01 (BD800) 25 Jul 2018
3
CAUTION
When disassembling or removing the product, wait until the
injuries or damage.
Before using the product, ensure piping is cleaned and fl ushe d t o
seat.
Be sure to use only the recommended components when
discharge of fluids.
Do not use excessive force when connecting threaded pipes to
which may cause burns or other injury.
Do not place weight on top of t he spanner cap. The product is
spanner cap or injury.
When using the spanner cap, be sure to use heat-resistant
injuries or damage.
Use only under conditions in which no freez e-up will occur.
may cause burns or other injury.
Use only under conditions in which no water hammer will
fluid discharge, which may cause burns or other injury.
internal pressure equals atmospheric pr essur e and t he sur f ace
of the product has cooled to room temperat ur e.
Disassembling or removing the product when it is hot or under
pressure may lead to discharge of fluids, causing burns, other
remove foreign matter.
Failure to observe this precaution may cause leakage from the valve
repairing the product, and NEVER attempt to m odify the
product in any way.
Failure to observe these precautions may result in damage to the
product and burns or other injury due to malfunction or the
the product.
Over-tightening may cause breakage leading to fluid discharge,
not designed to be climbed on by people.
Failure to observe this precaution may result in damage to the
gloves.
Disassembling or removing the product when it is hot or under
pressure may lead to discharge of fluids, causing burns, other
Freezing may damage the product, leading to fluid discharge, which
occur.
The impact of water hammer m ay damage the product, leading to
172-65694MA-01 (BD800) 25 Jul 2018
4
DO NOT use for any other fluids than applicable fluids. DO NOT use for
toxic, flammable or otherwise hazardous fluids. This product is for
intended use only. Improper use may result in such hazards as damage
to the product or malfunctions that may lead to serious accidents.
WARNING
Install properly and
DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
Use only under conditions in which no freeze-up will occur. Freezing
may damage the product, leading to fluid discharge, which may cause
burns or other injury.
CAUTION
Model
Production Lot No.
Max. Operating Pressure (PMO) /
Max. Operating Temperature (TMO)
Nominal Diameter
Valve Class/
Body Material
No.
Name
M*
R*
G*
T*
No.
Name
M*
R*
G*
T* 1 Body
8
Gland Holder
2
Bonnet
9
Spanner Cap
3
Valve Seat
10
Bonnet Bolt
4
Valve Seat Gasket
11
Bonnet Nut
5
Bonnet Gasket
12
Flange/Socket
6
Valve Stem
13
Nameplate
7
Gland Packing
14
Gland Packing Removal Tool
Specifications
Refer to the product nameplate for detailed specifications.
Configuration
NOTE: Gland packing removal
tool is available on request.
Consult TLV for details.
*Replacement parts are available only in the following kits:
M = Maintenance kit
R = Repair kit
G = Gland packing
T = Gland packing removal tool
172-65694MA-01 (BD800) 25 Jul 2018
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