Detailed Product Description Product DescriptionInverted Pressure Balance Plug Valve Product Description Size: NPS 1/2" - 4" Pressure: Class 150 - 300 Material: WCB, LCB, CF8, CF3, CF3M, and CF8M Design & Manufacture Std.: API 6D, API 599, and ASME B16. 34 Face to Face Std.: API 6D, and ASME B16. 1 End Connection Std.: ASME B1. 20. 1, ASME B16. 5, and ASMEB16. 250 Test Standard: ISO5208, and API ...