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Product Description

This valve is factory set at 8.5 PSIG and is part of an inventory clearance sale.  If you are looking for a different set point, please click here to see all available options.


The 337 Kunkle pressure relief valve can be purchased preset per your requirements up to a maximum pressure of 60 psig and a minimum pressure of 1 psig.

337 Kunkle Pressure 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.

337 Kunkle Pressure Relief Valve Connections:

  • 2″ MPT (Male Pipe Thread) fitting for mounting on system
  • 2″ 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: 8 lb (3.6 kg)
The 337 Kunkle Pressure 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
240
1.5
276
2
313
2.5
349
3
386
3.5
422
4
458
4.5
495
5
531
5.5
552
6
773
6.5
594
7
615
7.5
636
8
657
8.5
678
9
699
9.5
720
10
741
10.5
762
11
782
11.5
803
12
824
12.5
845
13
865
13.5
886
14
907
14.5
927
15
948

CLEARANCE: 2″ Kunkle Pressure Relief Valve 337, 8.5 PSIG set point

BOM Number: 337-2 SKU: 31113.F1 Categories: ,

$249.00 $236.55

Inventory clearance sale
Factory set at 8.5 PSIG

Shipping Weight: 8 lbs
Shipping Dimensions: 5.375 × 4.5 × 7.125 in
Manufacturer:

Kunkle

Out of stock