The NRS gate valve is used to cut off pipe connections and perform zone control, replacing the monitor switch butterfly valve and the OS&Y ascending valve stem in the fire safety system. It is usually buried underground to prevent the risk of freezing. But to make it visible and easy to track in the system, it is usually used with a positioner rather than a handwheel. Thus, the positioner can control the opening and closing of the valve while performing position tracking.

 

       Advantages: the volume is smaller than the pressure reducing control valve, and easy to maintain;

       Disadvantages: Volume and economy are not as good as some valves used in fire protection systems.

 

Connection Type

       Flange

 

Work pressure

       300 psi ~ 600 psi

 

Maximum operating temperature

       80 ° C

 

size

       2” – 12”

 

Material characteristics

       - Body: ASTM A536, 65-45-12 Ductile Iron

       - Disc: ASTM A536, 65-45-12 & EPDM Ductile Iron

       -Valve shaft: stainless steel

       - gasket: EPDM

       -O-ring: NBR

 

Application range

       In fire protection systems, it is usually buried underground to prevent freezing.

 

Certification

       -UL certification

       -Ulc certification

       -FM certification

 

Product manual

       Click here to download NRS Non-Rising Gate Valve Manual

       Download Brochure (PDF)