Check Valves
specifications
and flow charts

- Suitable for use with Fluids and Gases at pressures to 3,000 PSI.
- Offers greater flow capacity than common ball type valves.
- Bubble tight check sealing accomplished with long life resilient material.
- Choose from five standard sizes: 1/8; 1/4; 3/8; 1/2 or 3/4 NPT with rated flow of 3 gallons per minute to 16 gallons per minute.
- * The standard valve has a cracking pressure of from 2 to 8 P.S.I.
- Lower or higher cracking pressures are available upon request.

All sizes are available in brass or stainless steel, Stainless steel valves are full hex and are rated to 5,000 PSI.

Stainless steel valves are special order only.

 check valvecheck valve

Barworth VALVE Number
Rated Flow Gallons Per Minute

Pipe Thread Size

A

Dimension/Size
B
C
D
331-2
3.0
1/8-24
2-1/2
7/8
1/4
331-6
3.5
1/4-18
2-1/2
7/8
1/4
331-8
6.0
3/8-18
3
1-1/16
5/16
331-12
10.5
1/2-14
3-1/2
1-3/8
3/8
331-14
16.0
3/4-14
4-1/4
1-5/8
1/2

 

Flow Rate Graph covering Barworth No. 331 Series Check Valves
The graph below shows the approximate pressure drop of each valve size through its flow range.

 

No. 331-2 1/8 NPT
No. 331-6 1/4 NPT
No. 331-8 3/8 NPT
No. 331-12 1/2 NPT
No. 331-14 3/4 NPT
 

Materials

Body end and poppet: Brass (standard).
303 or 316 Stainless Steel (optional).

Spring: Stainless Steel.

Packings: Buna-N or Viton® poppet seal
and O-Ring.

Teflon Back-up Rings available on request.

 

Inline Relief - Back Pressure:

** 331 Series Valves are available as low pressure inline relief valves or back pressure valves. Cracking pressure springs to 60 PSI. A nylon poppet is used with the elimination of the resilient seal. Fluid service only is recommended.


673 Morris Turnpike • Springfield, NJ 07081
Call: (973) 376-4883 • FAX: (973) 376-5041

Click here to e-mail us: barworthinc@yahoo.com

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