Kunkle Pressure Relief Valve 337 - 2"

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 seares 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)