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Journal de NMFIRE

April 07, 2023

Category Connection: Ensemble de pompe à incendie

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Tags:

#Ensemble diesel de pompe à eau #lutte contre l'incendie diesel de pompe #pompes à eau à moteur diesel du feu

Brief: Discover the UL Listed and FM Approved Circulation Relief Valve (CRV) for fire pump sets. This essential component prevents overpressure, protects equipment, and ensures compliance with NFPA 20 standards. Learn how it enhances safety, efficiency, and longevity in fire pump systems.

Related Product Features:

UL Listed and FM Approved for reliable performance and compliance.
Fast opening mechanism maintains steady line pressure.
Accommodates a wide range of flow rates for versatile applications.
Gradual closing prevents surges, ensuring smooth operation.
Adjustable pressure settings unaffected by discharge pressure.
Available in 2"-10" flanged sizes for 150 and 300 ANSI B16.42 classes.
Constructed with ductile iron ASTM A536 Grade 65-45-12 for durability.
Protective epoxy resin coating on wetted surfaces for enhanced longevity.

FAQ:

What is the purpose of the Circulation Relief Valve (CRV)?

The CRV prevents overpressure in electric motor-driven fire pumps, protects system components, ensures efficiency, and complies with NFPA 20 standards by relieving excess pressure during low-demand periods.
What are the pressure ranges available for the CRV?

The CRV is available in pressure ranges of 20~200 psi for Class 150 and 100~300 psi for Class 300, catering to different system requirements.
What materials are used in the construction of the CRV?

The main valve body and cover are made of ductile iron ASTM A536 Grade 65-45-12, with bronze seats, Teflon-coated stainless steel stems, and a cast bronze pilot control system with stainless steel trim for durability and performance.

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