Sale!
Product Description

This valve is factory set at 10.5 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.


For a high quality pressure relief valve Kunkle 337 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.

Connections:

  • 2.5″ MPT (Male Pipe Thread) fitting for mounting on system
  • 2.5″ 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: 12 lb (5.4 kg)
The 337 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
364
1.5
419
2
474
2.5
529
3
585
3.5
640
4
695
4.5
750
5
805
5.5
837
6
869
6.5
901
7
933
7.5
965
8
996
8.5
1028
9
1060
9.5
1092
10
1124
10.5
1155
11
1186
11.5
1218
12
1249
12.5
1280
13
1311
13.5
1342
14
1374
14.5
1405
15
1436

CLEARANCE: 2.5″ Kunkle Pressure Relief Valve 337, 10.5 PSIG set point

BOM Number: 337-2.5 SKU: 31114.R Categories: ,

$398.00 $378.10

Inventory clearance sale
Factory set at 10.5 PSIG

Shipping Weight: 13.2 lbs
Shipping Dimensions: 6.5 × 5.5 × 8.5 in
Manufacturer:

Kunkle