7337A Regulators

 reduce high gas supply pressures to practical 

use levels. Since capacities will vary with the pressure drop 
across the regulator (see Table D), due care must be exercised 
in properly sizing both the regulator and downstream piping. 
Outlet pressure of regulators (except where noted) may be varied 
through use of interchangeable compression springs within the 
groups indicated in selection Table B. Compression springs are 
identifi ed by either color or part number. Products ending in 
"-SS" contain an integrated overpressure slam-shut device.

SPECIFICATIONS

B

ody Sizes and End Connections:

 1

½  

" NPT

Orifi ce Diameter:

 See Table C

Maximum Operating Inlet Pressure:

 See Table C

Maximum Outlet (Casing) Pressure:

 15 psig 

Maximum Operating Outlet Pressure to Avoid Internal  

Parts Damage - The Outlet Pressure Rating:

 

 

3 psig above outlet pressure setting

Temperature Capabilities:

 -20° to 150°F

Pressure Registration:

 Internal registration

Slam-Shut Pressure Registration:

 Internal registration 

Approximate Weight:

 25 lbs 

SELECTION

When selecting a regulator, specify its complete designation in-
cluding pipe size code and spring designation or outlet pressure 
range.

Example:

 Select a regulator for 2000 scfh of 0.6 specifi c 

gravity natural gas from 5 psig supply pressure to 26"w.c. outlet 
pressure.

Solution:

 Entering Table D, the required spring range is 14 to 

30"w.c. Further, the regulator with the appropriate capacity is 
determined to be the 7337A-3-GNS.

Table A. Specifi c Gravity Correction Factor

 

Sp Gr 

Factor

 0.4 

1.22 

 0.6 

1.00 

 1.0 

0.774

 1.5 

0.632

 2.0 

0.547

RELIEF VALVES

The 7337A-3 Regulator comes equipped with a non-adjustable 
internal limited capacity relief valve feature. This internal relief 
valve is intended to minimize overpressure that could occur 
due to seat leakage. If the downstream pressure exceeds the 
regulator setting by 7 to 56"w.c. depending on the main spring 
used (see Table B), the relief valve opens and excess gas is 
vented through the vent in the upper spring case. 

If the specifi c gravity of the gas is other than 0.6, divide desired 
fl ow by gravity factor to get equivalent fl ow of natural gas; then 
select regulator from Table D.

Multiply a given size regulators natural gas capacity by gravity 
factor to get regulator capacity with diff erent gas.

Bulletin 7337A-3

Page 2

Product Overview | High Pressure Gas Regulator

Catalog Combustion 2021 - Page 1193

Fives Group
FIVES GROUP
FIVES GROUP-FIVES GROUP-1193-1180

Request Quote

Please provide additional information
Company: *
Name: *
Email: *
Telephone:
Product:
Message:


Privacy Policy and Terms of Service apply.

Fives Group Part Numbers on this Catalog Page
Line Part Number Manufacturer Request Quote
1 7337a-3-gns.7337a-3 Fives Group Request Quote