Female/Male Ports For heating, sanitary and compressed air systems, pumps and autoclavesBody in hot forged DZR brassThreading to BS2779Hostaform inner valveSpring in 18//8 AISI 302-304 stainless steelHydrostatic test pressures 30 bar/435psi (shell), 22 bar/315psi (seat)Compact design, allows flow in one direction only, indicated by arrow on valve bodyInstallation in vertical, horizontal or oblique pipelinesSnap-in, spring loaded non- return valve, WRC approvedLow pressure drop, prevents water hammerFull flow area equal to nominal size