Three Bonnet Design: 1)Bolted 2)Welded 3)Pressure seal Standards Compliance: 1) Design and manufacture: API602 BS5352 2) Inspection and test: API598 3) Socket-weld dimensions: ASME B16.11 4) End threads dimensions: ASME B1.20.1 5) Pressure-temperature rating: ASME B16.34 Gate Valve Major parameter: 6) Size: 1/2 - 3", 7) Class: 150 - 1, 500lbs 8) Connection type: SW, NPT, FF 9) Material: A105 F304 F316 F304L F316L 10) Operation: Manual, pneumatic, electric, hydraulic and pneumatic-hydraulic 11) Accessory: With through conduit or non-through conduit.