Wedge gate valve
Wedge gate valves are designed for fully open or fully closed service. They are installed in pipelines as isolating valves, and should not be used as control or regulating valves. Operation of a gate valve is performed doing an either anti-clockwise to close or clockwise to open rotating motion of the stem, using an handwheel or an actuator. When operating the valve stem, the gate moves upwards or downwards on the threaded part of the stem.
Gate valves are often used when minimum pressure loss and a free bore is needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from open to closed position, the slow operation also prevents water hammer effects.
Gate valves can be used for a vast number of fluids and gases, with temperatures limited by the packing temperature limit. The wedge-shaped gate valves use two inclined seats and a slightly mismatched inclined gate.
At MAGVALVES we supply forged steel gate valves up to 2” and casted gate valves from 2” and above.
Construction: Bolted Bonnet, Welded Bonnet, Pressure Seal – Solid or Flex Wedge, Parallel slide
Main Design Codes: ASME B16.34, API602, BS5352, ISO 15761, API 600, API 6A
Pressure Class: ANSI 150#-4500#
Size Range: from ½” to 24”
API 6A Pressure Class: 3000-15000
API 6A Size Range: from 1,13/16” to 11”
Ends: SW, NPT, BW, RF, RJ, HUB, Compact Flange
Material: Carbon steel, Stainless steel, Alloy steel
Alternative customized solutions can be provided including: design for cryogenic service/bellow seal valves/integral extended bodies valves/DIN valves