Detailed Product Description Specification:(1)SIZE: 1/4"-3" (2)PRESSURE: 200PSI (3)MATERIAL: ASTM A351 CF8M, PTFE, AISI316 (4)THREAD STANDARD: BSPT,BSP,NPT,DIN259/2999(5)APPLICABLE TEMP RANGE: -60 ~ +450 Deg. F (6) SUITABLE MEDIUM: Water, steam, oil products, nitric acid, acetic acid.Swing check valve (stainless steel check valve,threaded check valve)