Thread Vertical Check valve : API6D/API608/PI602/API594 Thread ends:ASME ... ISO-228-1 Products Description :1: Products name: Thread Vertical check valve2: Size: 1/2”-2”Pressure Rating: 200WOG3: ... SS304, SS316,SS304L,SS316L,SS410,SS416.etc.5: Operation: Manual6: Application:Offshore /Oil /Gas /Chemical /PetrochemicalPulp /Paper /Water /Wastewater ... , API 607, TS and ISO 9001 Thread Vertical check valve