API 600 Gate Valve

Gate valves serve as efficient on-off valves with flow in either direction. In such a design, a wedge slides cross a general passageway in order to control fluid flow, one of the most significant characteristics of this type of valves is its straight-through, unobstructed passageway when set in the “full open” position. This is made possible by the wedge lifting entirely out of the passageway. As a result, gate valves are characterized by a minimum of turbulence and pressure drop in operation. while gate valves are good for applications requiring these two factors, they are not recommended for installations in which throttling would be a function. They are designed for on/off service. QDV gate valves body structure is available in cast steel

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

DIN3352: Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas 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

Size Range: 2" - 40"

Pressure rating: ANSI Class150LB- 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