Description
The Kunkle Relief 337 is a pressure relief valve that can be purchased preset per your requirements up to a maximum pressure of 60 psig and a minimum pressure of 1 psig.Kunkle Relief Valve Features:
- Large nozzle design provides high capacity.
- Flat bronze valve series are lapped for optimum performance.
- Warn ring offers easy adjustability for precise opening with minimum pre-open simmer and exact blower down control.
- Pivot Between disc and spring corrects misalignment and compensates for spring side thrust.
- A lift handle is provided for easy manual testing.
- Protects low to medium pressure blowers and compressors. It is well suited for positive displacement blowers.
Kunkle Relief Valve Connections:
- 3" MPT (Male Pipe Thread) fitting for mounting on system
- 3" FPT (Female Pipe Thread) fitting to allow for piping away the relief flow
Materials of Construction:
- Nozzle - Bronze, SB62
- Set Screw A108-1018 Brass Plated
- Regulator Ring - Bronze B584-C84400
- Disc - Bronze B584-C84400
- Spring Step - Steel A109 Coated
- Spring - SS A313-302
- Body - Cast Iron A-126, Class A or B
- Compression Screw - Bronze B584-C84400
- Stem - Brass B16
- Regulator Ring Set Screw - Brass B16
Weight: 20 lb (9.1 kg)
The 337 Kunkle Relief Valve will not have a code stamp or 'NB' on nameplate below 15 psig setting.
Capcities based on Air (SCFM)
The table below shows flow values in scfm at set points from 1 to 15 psig
| Set Pressure psig |
Volume (SCFM) |
1 |
527 |
| 1.5 |
607 |
| 2 |
687 |
| 2.5 |
767 |
| 3 |
847 |
3.5 |
926 |
4 |
1006 |
4.5 |
1086 |
5 |
1166 |
5.5 |
1212 |
6 |
1258 |
6.5 |
1305 |
7 |
1351 |
7.5 |
1397 |
8 |
1443 |
8.5 |
1489 |
9 |
1536 |
9.5 |
1582 |
10 |
1628 |
10.5 |
1673 |
11 |
1719 |
11.5 |
1764 |
12 |
1809 |
12.5 |
1855 |
13 |
1900 |
13.5 |
1945 |
14 |
1990 |
14.5 |
2036 |
15 |
2081 |
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