Kunkle Relief Valves

The Kunkle Figure 20 relief valve is an all bronze angle pattern liquid pressure relief valve with a pressure tight cap. The cap is removed to expose a drive screw and lock nut which is used to adjust the valve to the desired pressure setting. 

(The Kunkle Figure 20 is neither UL Listed or FM approved and it is recommended that a Cla-Val 55L-60 be used for fire pump applications.)

3/4" MNPT x 3/4" FNPT

The Kunkle Figure 20 relief valve is an all bronze angle pattern liquid pressure relief valve with a pressure tight cap. The cap is removed to expose a drive screw and lock nut which is used to adjust the valve to the desired pressure setting. 

(The Kunkle Figure 20 is neither UL Listed or FM approved and it is recommended that a Cla-Val 55L-60 be used for fire pump applications.)

3/4" MNPT x 3/4" FNPT

The Kunkle Model 218/228 is a bronze trim UL Listed and FM approved relief valve designed for fire pump installations. It is easily adjustable with the provided hand-wheel. Maximum set pressure of 175 PSI with the 125# inlet flange and a maximum set pressure of 200 PSI with a 250# inlet flanges.

eFirePump.com stocks the Kunkle 218 fire pump relief valve and typically ships to the continental US for FREE typically within 1-2 business days.

We furnish the Kunkle Model 228 which is the same valve as the 218; but includes both the pressure cap and handwheel. Both are equivalent to the non-listed Kunkle Model 91.

Pressure Ratings Class 125# Flanged

200 PSI Maximum Inlet Pressure

60-175 PSI Adjustable Set Relief Pressure Range

Pressure Rating Class 250# Flanged

200 PSI Maximum Inlet Pressure 

60-200 PSI Adjustable Set Relief Pressure Range

Fire pump discharge closed waste cones are manufactured to meet NFPA 20 requirements for use with UL/FM relief valves. 

These waste cones are constructed of fabricated steel with 150# RF ANSI B.16.5 flanged connections rated to 175 PSI WP with two sight glasses for visual confirmation of water flow.

Waste cones are sized based on NFPA 20 minimum relief valve discharge sizing. Please contact us for custom sizes or grooved connection options.