... /4"- 6" ) Working Pressure: 10kg/cm2 150 psi PVC Swing Check Valve ( in Vertical or in Horizontal ) DIN, ANSI, JIS, BS ... Sure the Arrow Mark on the Top Side 1. PVC Check Valve DIN, ANSI, JIS, BS Standard DN20 ( 3/4" ) - DN150 ... ( 6" ) EPDM Rubber. BSPT or NPT2. PVC Check Valve with Flange DIN, ANSI, JIS, BS Standard DN20 ( 2 ...