gate valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel. Typical gate valves should never be used for regulating flow, unless they are specifically designed for that purpose. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening.
Cast Steel Wedge Gate Valve Specifications

Design:
API 600: Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas Industries 
BS 1414: Specification for Steel Wedge Gate Valves (Flanged and Butt-welding Ends) for the Petroleum, Petrochemical and Allied Industries
Connection: ASME B16.34 Valves Flanged, Threaded and Welding Ends
Flange: ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through 24
ASME B16.47 Series A Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard
Butt Weld: ASME B16.25 Buttwelding Ends
Face to face: ASME B16.10 Face to Face and End to End Dimensions of Valves
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges and Unions
BB, OS&Y: Bolt Bonnet, Outside screw and Yoke
Pressure rating: ANSI Class150LB- 2500LB
Size Range：1/2"~56"
Pressure rating: Class 150LB-2500LB

Materials:
Carbon Steel:  ASTM A105, ASTM A216 WCB, ASTM A217 WC6, ASTM A217 WC9, ASTM A217 C5,ASTM A217 C12, ASTM A217 C12A
Stainless Steel:  ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3, ASTM A351 CF3M, ASTM A351 CM8,  ASTM A890 GR4A, ASTM A890 GR6A
Operation: Handwheel, Gearbox, Electric actuator, Pneumatic actuator, hydraulica actuator
Test: API598,API6D
KATA cast steel gate valves are designed and manufactured to provide maximum service life and dependability. All gate valves are full ported and meet the design requirements of API-600 and ANSI B 16.34. Valves are available in a complete range of body/bonnet materials and trims.