... : ASME B16.34, API 600 Cast Steel Gate Valves, OS&Y, Rising Stem, Bolted/Pressure Seal Bonnet, BW, 150LB-2500LB, 2 ... -48 Inch. Features: OS&Y, Rising Stem. Bolted Bonnet/Pressure Seal Bonnet. Flexible Wedge. Extended ... .25. Test: API 598. Special: NACE MR-01-75. Pressure: Class 150LB-2500LB. Size Range: 2"-48". Material Available: WCB, WCC ...