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Parallel Gate Valve
Parallel gate valve utilize a parallel-faced, gatelike seating element. A double-disk parallel gate valve has two parallel disks that are forced, on closure, against parallel seats by a “spreader.”
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Product Description
Buy Parallel Gate Valve which Can be Customized From Our Factory in China with Price List
1.Introduction of Parallel gate valve
Parallel gate valve utilize a parallel-faced, gatelike seating element. A double-disk parallel gate valve has two parallel disks that are forced, on closure, against parallel seats by a “spreader.”
Parallel gate valve is used for liquids and gases at normal temperatures. On the other hand, the seating force in a single-disk parallel gate valve is provided by the fluid pressure acting on either a floating disk or a floating seat. This configuration allows closure with flow in either direction.
Parallel gate valve is used for liquid hydrocarbons and gases. If the fluid pressure is low, the seating force provided by the fluid pressure may be insufficient to produce a satisfactory seal in metal-sealed valves. If the fluid pressure is high, frequent valve operation may lead to excessive wear of the seating forces; thus, parallel gate valves are normally used for on/off duties that require infrequent operation.
|
Type of Valve |
Parallel gate valve |
|
DN |
DN50～DN900 |
|
PN（MPa） |
1.0～2.5Mpa, 4.0～16Mpa, |
|
Design Temperature Range |
-15℃～425℃ |
|
Connection type: |
Flanged |
|
Actuator type |
Manual drive, Pneumatic, Hydraulic or electric Actuator |
|
Applicable Medium |
Water, oil, gas, and various corrosion medium |
|
Spare Parts |
Material |
|
Body 、Bonnet、Disc |
Cast iron, Ductile Iron, Cast steel, Stainless Steel, |
|
Stem |
Stainless steel |
|
Sealing surface |
Bronze, stainless steel, hard alloy NBR, epdm |
|
Sealing Shim |
Enhanced flexible graphite, 1Cr13/flexible graphite |
|
Packing |
O-ring, flexible graphite |
Advantages of parallel gate valve
The parallel gate valve has low flow resistance, and its flow resistance without shrinking is similar to that of a short tube. The parallel gate valve with diversion hole can be directly used for pigging when installed on the pipeline. Since the gate slides on the two valve seat surfaces, the parallel gate valve can also be applied to the medium with suspended particles, and the sealing surface of the parallel gate valve is actually automatically positioned. The sealing surface of the valve seat will not be damaged by the thermal deformation of the valve body. Moreover, even if the parallel gate valve is closed in a cold state, the thermal elongation of the valve stem will not overload the sealing surface. At the same time, when the parallel gate valve is closed, the parallel gate valve without diversion hole does not require the closing position of the gate to have a higher accuracy, so the electric flat valve can use the stroke to control the opening and closing position.
4.Application Of Parallel gate valve
5.FAQ
6.About Tianjin Milestone Pump & Valve Co.,Ltd.
7. Contact Information
Hot Tags: Parallel Gate Valve, Manufacturers, Suppliers, Factory, Customized, In Stock, Bulk, Free Sample, China, Made In China, Cheap, Low Price, Price, Price List, Quotation, CE, Quality, Durable, One Year Warranty
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