Cast Steel Gate Valve Structure: Full bore Flexible and rigid and soft seal structureSelf-centering glad and plate renewable seatBolted bonnet, spiral would eight-square gasket sealing bonnet and pressureSealing bonnetDesign & Manufacture Std: API6D, API 600, ASME B16.34Face to Face: ASME B 16.10, API600, API 6DFlange End: ASME B 16.5(NPS??24); AMSE B16.47A, MSS SP-44(??24)Butt-welding End: ASME B16.25 Testing & inspection: API 598Size: CL150: NPS 2"-60"CL300, CL600: NPS 2"-36"Material: WCB, LCB, WC6, C5, CF8, CF8M, CF3, CF3MOperation: Manual, Electric, Pneumatic, Hydraulic, GearCL900, CL1500: NPS 2"-24"Pressure: Class 150-1500