UL Listed and FM Approved Accessories of Fire Pump Set

Circulation (Casing) Relief Valve UL Listed and FM Approved

The *Circulation Relief Valve (CRV)* is essential for electric motor-driven fire pumps because

it prevents overpressure, protects equipment, ensures system efficiency, and complies with

NFPA 20 standards. It relieves excess pressure during low-demand periods, preventing damage

to system components and reducing energy consumption. Overall, the CRV maintains the safety,

efficiency, and longevity of fire pump systems

UL Listed / ULC Listed Pressure Relief Valve

Factory Mutual Approved

Fast Opening to Maintain Steady Line Pressure

Accommodates Wide Range of Flow Rates

Closes Gradually for surge-Free Operation

Adjustable Pressure Settings, Not Affected by

Pressure at Valve Discharge

Specifications:

Globe: 2"-10" flanged Angle: 2" -10" flanged

150 and 300 ANSI B16.42

Class 150-250 psi Max. Class 300-300 psi Max

Water, to 180°F Max.

Main valve body & cover

Ductile Iron ASTM A536 Grade 65-45-12

Standard Main Valve Trim: Bronze Seat, Teflon Coated Stainless Steel Stem, Dura-Kleen Stem

Standard Pilot Control System: Cast Bronze with Stainless Steel trim

Aailable in the following relief

Pressure ranges:

20~200 psi (150 Class) 100~300psi (300 Class)

Protective epoxy resin coating of wetted surfaces of main valve cast iron components

(UL Listed HNFX EX2855)

Fire Pump FM Approved Accessories

Fire Pump UL Listed Accessories

250psi Fire Pump Set

UL Listed and FM Approved Accessories of Fire Pump Set Images