NA51361 | 1"NPT Inline Check Valve | Caleffi Knurl Size_1/2IN **Key Features and Benefits:** *

**Key Features and Benefits:** * **Normally closed operation:** The valve remains closed until it receives an electrical signal to open

Its compact size and short length make it ideal for space-constrained installations

**Reliable Performance:** Automatic air vent ensures consistent air removal

preventing stagnant air and ensuring a comfortable indoor environment

NA51361 | 1"NPT Inline Check Valve | Caleffi Knurl Size_1/2IN **Key Features and Benefits:** ***Caleffi 1" NPT Inline Check Valve (NA51361)** The Caleffi NA51361 Inline Check Valve is engineered to prevent backflow in piping systems, safeguarding system components and ensuring proper fluid flow. This NPT threaded valve allows fluid flow in one direction only, employing a spring loaded poppet that opens when pressure exceeds a predetermined value. Crafted from durable brass, this check valve withstands pressures up to 150 psi and temperatures