... Check Valve. 1.Material:brass body/stem,zinc/plastic handle. 2.Medium:water,oil,gas. 3.Certification:CE. Durable Forged Brass Check Valve ... handle,Stainless steel handle, Aluminium handle,Plastic handle.Connection Theaded ISO228,BSP,NPT, ... Technics Forged. Chrome plated. Nickel plated. Galvanized.4.Temperature: Normal or -20°C --- 150 ... Oil,Gas,etc.6.Size: 1/2''----4''.7.Surface: Brass yellow.8.Standard: ...