Gate Valve
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Casting steel Wedge Gate Valve for water, steam, air & oil
The opening and closing element of the wedge gate valve is the gate. The movement direction of the gate plate is perpendicular to the fluid direction. The wedge gate valve generally open and close by rotating the handwheel to move the stem up and down. There are two kinds of wedge gate valve: outside rising stem wedge gate valve and inside non-rising stem wedge gate valve. The outside rising stem wedge gate valve is the valve stem moving up and down, and the valve stem nut is fixed. The inside non-rising stem wedge gate valve is the stem fixed, and the stem nut moves up and down to complete the opening and closing of the valve.
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Casting Steel Parallel Type Gate Valve for sour and alkaline medium
Parallel type gate valve is a sliding valve that closing part is a parallel gate. The closure may be single or double gate with a supporting mechanism. The compression force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or floating valve seat. If it is a double gate valve, the support mechanism between the two gates can supplement this pressing force.
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Wafer Type Knife Type Gate Valve for fluids containing solids (particles, dust & pulp)
Knife gate valve is also known as knife type gate valve, slurry valve and mud valve. It’s opening & closing element is gate. The movement direction of the gate is perpendicular to the fluid direction. The medium is cut off by a knife edge gate that can cut fiber materials. The gate has two sealing surfaces. When the knife gate valve is closed, the sealing surface can be sealed only by medium pressure, That is, rely on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of valve, this is self-sealing. Most gate valves are using forced sealing, that is, when the valve is closed, rely on external force to force the gate to the valve seat to ensure the tightness of the sealing surface.
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Ductile Iron Flanged Soft Seal Gate Valve for water treatment system
The opening and closing element of the soft seated gate valve is the gate, and the movement direction of the gate is perpendicular to the fluid direction. The gate valve can only fully open and close, and cannot used to adjust and throttle. The gate has two sealing surfaces. The most commonly used mode: the two sealing surfaces of the gate form a wedge, and the wedge angle varies with the valve parameters.
The gate of wedge gate valve can be made into a whole, which is called solid gate valve; It can also be made into a gate that can produce slight deformation to improve its manufacturability and make up for the deviation of the angle of the sealing surface during processing. This gate plate is called flexible gate valve.
