... Steel 3pc Butt Welding Ball Valve (BW),1000psi,lock 1) Investment casting. 2) Competitive Prices 3) SS201 ... Ball Valve[Pressure:1000psi],[Material:SS304,SS316],[Size:1/4"~4"],[Thread:BSP,BSPT,NPT] Advantages1) ... steel 202 & 201. 5) Butt WeldingDescriptionMaterial: Stainless Steel: 1) SS316 / ASTM A351-CF8M / DIN1.4408 2) SS304 ... / DIN1.0619Size: 1/4", 3/8", 1/2", 3/4", 1", 11/4", 1.1/2", 2" ,2.1/2", 3", 4 ...