... Welding Ball Valve[Pressure:1000psi],[Material:SS304,SS316],[Size:1/4"~4"],[Thread:BSP,BSPT,NPT] Advantages1) Investment casting.2) ... WCB / ASTM A216-WCB / DIN1.0619Size: 1/4", 3/8", 1/2", 3/4", 1", 11/4", 1.1/2", 2" ,2.1/2 ... ", 3", 4" Investment casting body & caps. Bottom- ... Valve[Pressure:1000psi],[Material:SS304,SS316],[Size:1/4"~4"],[Thread:BSP,BSPT,NPT]