WZIPIE Cast Steel Check Valves: 1. Swing Check Valves 2. Duo Wafer Check Valves Size: 2in-36in, Class: ANSI 150-2500Lbs Body: WCB, WCC, LCB, LCC, CF8, CF8M, CF3, CF3M, Alloy steel, CI, DI etc. End Conn.: RF, RTJ, BW, Wafer, Lug etc. for oil, gas, petrochemical etc. industrial applications. We have more than 30years experiences in manufacturing and supply this.