CVS Controls Ltd. 1301F, 1301G Product Manual

Product Manual

CVS Type 1 301F and
CVS Type 1301G Regulator

Introduction

This CVS Controls product manual includes
instructions for the installation, adjustment,
maintenance and parts ordering of the CVS Type
1301F and CVS Type 1301G Regulator.

All CVS Controls equipment should be installed,
operated and maintained by qualified personnel.
If you have any questions regarding this
equipment, contact your CVS Controls
representative.

Any leak in the pressure system indicates that
service is required. Failure to remove the
regulator from service for immediate maintenance
may cause a hazardous situation.

Description

The CVS Type 1301F and 1301G Regulator is a
self-operated, high-pressure regulator. It is used
where high pressure gas must be reduced for use
as pilot supply pressure in pilot-operated
regulators, or as loading pressure in pressure­loaded regulators. This regulator is also suitable
for other applications as high-pressure reducing
regulators for various gases.

The CVS Type 1301F is available in three spring
ranges to provide outlet pressures to 225 psig
(15.5 bar). CVS Type 1301G provides outlet
pressures to 500 psig (34.5 bar) in one spring
range. Inlet pressures can range up to 6000 psig
(411 bar).

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Figure 1: CVS Type 1301F and

CVS Type 1301G Regulator

Specifications

Refer to Table 1 for complete specifications for
the CVS Type 1301F and CVS Type 1301G
Regulator. Every regulator which comes from the
factory has the maximum outlet pressure
stamped on the nameplate (Key 21).

Specifications

End Connections

Maximum Inlet Pressure

Maximum Emergency Outlet Pressure
Type 1301F

Type 1301G

Outlet Pressure Ranges
Type 1301F

10 to 75 psig (.07 to 5.2 bar)

100 to 225 psig (7 bar to 15.5 bar)

Type 1301G

Pressure Registration

Temperature
Capabilities

Nylon Valve Disk and Neoprene
Gaskets

PTFE Valve Disk and
Flourocarbon Gaskets (FKM)

Not recommended for hot water use

PTFE Valve Disk and Ethylene­Propylene Gaskets (EPDM)

Orifice Port Diameter

Spring Case Vents

Stainless Steel Spring Case
Type 1301F

Type 1301G

Options

Bracket for mounting regulator on yoke of control valve actuator, or
Inlet filter disk

Approximate Weight

Product Manual: CVS Type 1301F and 1301G Regulator

CVS Controls Ltd.

6000 psig (414 bar), Air and Gas

Installation

WARNING

Do not install any pressure equipment where
service conditions exceed the manufacturer’s
specifications. Over pressuring of regulator
may result in leakage, equipment damage or
personal injury. Excessive pressure can cause
the pressure-containing parts to burst, or
accumulated gas to explode. Always conform
to applicable industry codes and regulations.

Prior to installation check the regulator and all
tubing and piping for damage and remove any
foreign material.

The regulator can be installed in any position.

WARNING

A regulator may vent some gas into the
atmosphere. When used in hazardous gas
service, the regulator should be vented to a
remote, safe location. If not properly vented,
hazardous gas may accumulate and cause fire
or explosion.

¼-inch NPT female (one inlet and two outlet connections)

250 psig (17 bar)

550 psig (37.9 bar)

50 to 150 psig (3.4 bar to 10.3 bar)

200 to 500 psig (13.8 to 34.5 bar)

Internal

-20 to 180°F (-29 to 82°C)

-20 to 400°F (-29 to 204°C)

-65 to 302°F (-54 to 150°C)

5/64-inch (2mm)

One 1/4-inch NPT female connection

One 1/8-inch NPT connection

8 pounds (3.6 kg)

Prior to being shipped from CVS Controls, the
pressure setting for each regulator is set
according to customer specifications. If no setting
is specified, the outlet pressure is set at the
midpoint of the regulator spring range.

If pressure adjustment is required, refer to the
“Start Up” section of this guide. Always check the
spring section to ensure it is correct for the
application.

Begin installation by applying pipe compound to
the pipeline threads. Connect inlet piping or
tubing to the ¼-inch NPT screwed connection
marked “In” as well as outlet piping or tubing to
one of the ¼-inch NPT screwed connections
marked “Out”. Install a pressure gauge or pipe
plug in the unused outlet connection.

To maintain continuous operation during
inspection or maintenance of the regulator, install
a three-valve bypass around the regulator.

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Start Up

When the regulator has been installed and
downstream equipment has been adjusted, the
regulator can be pressurized.

Using gauges to monitor the pressure slowly open
upstream and downstream block valves during start
up and while performing any adjustments.

If adjustment is required loosen the locknut (Key 11)
and turn the adjusting screw (Key 1) either clockwise
to increase the set pressure or counter-clockwise to
decrease the set pressure. Monitor the pressure
during the adjustment using pressure gauges. When
the adjustment is complete, tighten the locknut. If
the desired outlet pressure is not within the range
specified by the regulator spring, refer to the
“Maintenance” section of this guide and install the
spring that suits the desired range.

Shutdown

To shutdown the regulator, close the upstream
shutoff valve, then close the downstream shutoff
valve. Open the vent valves between the regulator
and the downstream shutoff valve then open the
vent between the regulator and the upstream shutoff
valve. If vent valves have not been installed, safely
bleed off both inlet and outlet pressures and ensure
that the regulator contains no pressure.

Product Manual: CVS T ype 13 01F and 1301G Regulator

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Disassembly

These steps describe how to completely disassemble
the regulator. To perform inspection or replace parts,
complete only the steps necessary for the specific
job. Refer to Figure 2 for key numbers unless
otherwise indicated.

1. Loosen the locknut (Key 11) and release

spring compression by turning the adjusting
screw (Key 1) counterclockwise.

2. Remove the bottom cap (Key 9), bottom cap

gasket (Key 8) and spring (Key 3).

3. Remove the valve disk assembly (Key 19)

from the yoke (Key 17).

4. Remove the valve disk collar (Key 10) from

the valve disk assembly.

5. Remove the spring case cap screws (Key 5)

and separate the spring case (Key 2) from the
regulator body (Key 6).

6. Remove the upper spring seat (Key 12) and

spring (Key 3).

7. Refer to Figure 3 and unscrew the diaphragm

locknut (Key 4). Remove the diaphragm plate
(Key 13), the two diaphragms (Key 13) and
the diaphragm plate gasket (Key 7).

8. Remove the yoke screws (Key 15) and lift the

lower and upper halves of the yoke out of the
body.

Maintenance

Regulator maintenance should be done as required
by local regulations, and as necessary due to normal
wear and tear. Frequency of inspection and parts
replacement should be done according to severity of
service.

WARNING

Prior to performing any maintenance or
disassembly, isolate the regulator from system
pressure and relieve all internal pressure.
Performing maintenance while the regulator is
pressurized could result in injury, equipment
damage or explosion of accumulated gas.

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9. Unscrew the orifice (Key 18) and examine the

seating edge. If the seat is worn or nicked,
replace with a new part.

Assembly

Product Manual: CVS Type 1301F and 1301G Regulator

CVS Controls Ltd.

Parts Ordering

These are complete instructions assuming the
regulator was fully disassembled. If the regulator
was only partially disassembled, start at the
appropriate step. Refer to Figure 2 for key numbers.

1. Screw the orifice (Key 18) into the regulator

then insert both halves of the yoke (Key 17).
Fasten the yoke together with the cap screws
(Key 15).

2. The valve disk assembly (Key 19) has two

disks (one on each end). Inspect both disks
and select which one will be used. Thread the
assembly into the yoke so that the disk to be
used is against the orifice. Thread the valve
disk collar (Key 10) on to the exposed end of
the valve disk assembly.

3. Place the bottom cap gasket (Key 8) onto the

bottom cap (Key 9), then insert the spring
(Key 3) into the bottom cap and thread the
assembly into the regulator.

4. Place the body gasket (Key 16) on the

regulator body (Key 6).

5. Refer to Figure 3 and place the diaphragm

plate gasket (Key 7), the two diaphragms (Key

14) and the diaphragm plate (Key 13) onto
the yoke (Key 17). Ensure the diaphragm
convolutions are toward the spring and thread
the diaphragm locknut (Key 4) onto the yoke.

All pertinent information regarding the regulator is
stamped on the bottom cap and on the nameplate.
Please refer to this information when corresponding
with CVS Controls regarding parts or service for your
CVS Type 1301F and CVS Type 1301G Regulator.

When ordering replacement parts, please provide
the complete part number from the enclosed parts
list.

6. Place the regulator spring (Key 2) and upper

spring seat (Key 12) onto the diaphragm
plate.

7. Position the spring case (Key 2) over the

spring and on the regulator body. Line up the
spring case vent or vents, insert the cap
screws (Key 5) and tighten them by hand.

8. Thread the adjusting screw (Key 1) and

locknut (Key 11) into the spring case so the
spring is just slightly compressed. Securely
tighten the cap screws (Key 5) and refer to the
“Start Up” instructions for proper adjustment
procedures.

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Product Manual: CVS T ype 13 01F and 1301G Regulator

Key

Description

Part Number

1

Adjusting Screw

CVS1A368728982

2

Adjusting Screw Locknut

Steel Spring Case

CVS1A352224122

3

Spring Case (SST)

CVS21A6377X012

4

Upper Spring Seat, Steel

CVS1B798525062

0-75 psig (0 to 5.2 bar), Blue

CVS1D387227022

0-150 PSIG (0 TO 10.3 bar), Cadmium

CVS1B788527022

0-225 PSIG (0 TO 15.5 bar), Red

CVS1D465127142

6

Spring Case Cap Screw, Steel (6 req’d)

CVS1K764524052

7

Diaphragm Locknut, Cd pl Steel

CVS1A309324122

8

Diaphragm Head, Steel Cd pl

CVS1D387325072

9

Diaphragm Head Gasket

Viton

CVS1D373004122

10

Machine Screw (2 req’d)

SST, for SST Yoke

CVS1J926938992

11

Diaphragm, 302 SST, 2 req’d

CVS1D387036012

12

Body

SST, ¼” NPT

CVS2J920033092

13

Body Gasket

Viton

CVS1D372904122

14

Yoke

SST

CVS1J925936042

15

Seat Ring, 303 SST

CVS1D3865X0032

16

Bottom Cap Gasket

SST Bottom Cap, Viton O-Ring

CVS1J926806382

SST/Nylon

CVS1D4684000C2

SST/TFE

CVS1D4684000B2

19

Bottom Cap

SST

CVS1J919635072

20

Valve Disc Collar

CVS1D468635032

21*

Nameplate, SST (Not Shown)

CVS1F1043

22*

Top Connector, 316 SST (use with SST Yoke only) (Not Shown)

CVS1J926035072

Figure 3: Exploded View of Diaphragm Head Assembly and Yoke

Figure 2: CVS Type 1301F Regulator

Parts List - CVS Type 1301F

5 Spring, Cd pl Steel

17 Valve Disk Assembly

18 Valve Spring, 302 SST CVS1D387137022

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Product Manual: CVS T ype 13 01F and 1301G Regulator

Key

Description

Part Number

7

Diaphragm Locknut, Cd pl Steel

CVS1A309324122

9

Diaphragm Head Gasket

CVS1D373004122

13

Body Gasket

CVS1D372904122

15

Seat Ring, 303 SST

CVS1D3865X0032

SST/Nylon

CVS1D4684000C2

SST/TFE

CVS1D4684000B2

18

Valve Spring, 302 SST

CVS1D387137022

20

Valve Disc Collar

CVS1D468635032

22*

Top Connector, 316 SST (use with SST Yoke only) (Not Shown)

CVS1J926035072

Figure 2: CVS Type 1301G Regulator

Figure 3: Exploded View of Diaphragm Head Assembly and Yoke

Parts List - CVS Type 1301G

1 Adjusting Screw CVS 1K140624092

2 Adjusting Screw Locknut CVS1A354024122

3 Spring Case (SST) CVS21A6377X012-G

4 Upper Spring Seat, Steel CVS1K155828982

5 Spring, Cd pl Steel CVS1K156027142

6 Spring Case Cap Screw, Steel (6 req’d) CVS1K764524052

8 Diaphragm Head, Steel Cd pl CVS1K55725072

10 Machine Screw (2 req’d) CVS1J926938992

11 Diaphragm, 302 SST, 2 req’d CVS1D387036012

12 Body CVS2J920033092

14 Yoke CVS1J925936042

CVS Controls Ltd

16 Bottom Cap Gasket CVS1J926806382

17 Valve Disk Assembly

19 Bottom Cap CVS1J919635072

21 Nameplate, SST CVS1F1043

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Notes

Product Manual: CVS T ype 13 01F and 1301G Regulator

CVS Controls Ltd

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Product Manual: CVS T ype 13 01F and 1301G Regulator

Head Office

Website: www.cvs-controls.com E-Mail: [e-mail]

CVS Controls Ltd. strives for the highest levels of quality and accuracy. The information included in this publication is presented for

CVS Controls Ltd

3900 – 101 Street
Edmonton, Alberta, Canada T6E 0A5
Office: [phone]
Fax: [phone]

Printed in Canada Rev 2, Nov2012

Calgary Sales Office

3516 114 Avenue SE
Calgary, Alberta, Canada T2Z 3V6
Office: [phone]
Fax: [phone]

informational purposes only. CVS Controls Ltd. reserves the right to modify or change, and improve design, process, and specifications
without written notice. Under no circumstance is the information contained to be interpreted to be a guarantee/warranty with regard to our
products or services, applicability or use.
Selection, use and maintenance are the sole responsibility of the end user and purchaser. CVS Controls assumes no liability for the selection
use and maintenance of any product.

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