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Pressure Seal Gate Valve

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530 ton PVC pipe fittings injection moulding machine
Brand:
 Bole Machinery
Packaging:
 standard export packing
Min. Order:
 1
Model No.:
 BL530EKH-PVC
Place of Origin:
 Zhejiang, China
Transportation:
 Ocean

Pvc Special Injection Moulding Machine

BOLE Machinery (hereinafter referred to as [BOLE") was founded in 1998. As a subsidiary of CHENGLU group, BOLE is a high-tech enterprises that focus on the research, development and manufacture of precision...
Feed Mill Pneumatic Gate
Brand:
 HEXIE
Packaging:
 Standard Export Wooden Case
Certificate:
 ISO9001
Model No.:
 TZMQ50×50
Place of Origin:
 CHINA
Transportation:
 Ocean,Land

Rotary Distributor

Group Profile Xinxiang Hexie Group was established in 1992, occupying a total area of approximately 100,000 square meters and it is a diversified high-tech enterprise, engaged in research, production, sales...
JIS DIN API High Pressure Flanged Gate Valve
Packaging:
 Export Plywood Case
Supply Ability:
 10000 ton per year
Min. Order:
 1
Transportation:
 Ocean,Land,Air,Express

Flanged Ends Gate Valve

RST Valve Group CO., Ltd was founded in Wenzhou City with more than 10 years of experience in producing different kinds of industrial valves. It is a high-tech comprehensive valve enterprise with design,...
Stainless steel gate valve
Brand:
 ZT
Packaging:
 PVC bag, Carton, Plywood Case or Pallet
Supply Ability:
 10000 Piece/Mounth
Min. Order:
 20
Certificate:
 ISO 9001
Model No.:
 Gate valve

Gate Valves

Zhitong designs and builds a broad array of quality products in its ISO 9001 and CE manufacturing facility. Our products adhere to GB, JIS, DIN, EN, API, ANSI/ASME specifications for material content, pressure...
Precast HZS25 concrete batching plant
Brand:
 SIMAMIX
Packaging:
 Nude Packed
Supply Ability:
 2
Min. Order:
 1
Model No.:
 HZS25
Place of Origin:
 China

Stationary Concrete Plant

Zhengzhou Smart Machinery Manufacture Co., Ltd is the specialized corporation which produces large and medium construction equipment products. With nearly 30 years of development, successfully completed the...
Multi Function Valve With Gear Handle DN125
Brand:
 A1BEST
Supply Ability:
 Depend on The Quantity
Min. Order:
 1
Certificate:
 API Ce ISO Ts
Model No.:
 DN125
Place of Origin:
 Taiwan

Function Valve

A1-BEST is one of the professional valve manufacturers in China and Taiwan for over 20 years, a worldwide valve solution manufacture with full range and specifications of various valves: Ball Valve, Gate...
DIN3354 Pn16 Double Flange Gate Valve
Brand:
 Yuedavalve
Supply Ability:
 50000PCS/Year
Min. Order:
 10
Place of Origin:
 China

Resilient Seated Gate Valve

Suzhou Yueda Valve Co., Ltd. is a professional valve manufacturer in China and focus on providing customers with one-stop procurement services. The company mainly produces various types of valves for water...
API 6A Wellhead Gate Valve
Brand:
 YOULONG ENERGY
Packaging:
 wooden case or as per customers'
Supply Ability:
 500sets/m
Min. Order:
 10
Model No.:
 PSL1~4
Place of Origin:
 China

Gate Valve

Henan youlong petroleum engineering technology Co.,Ltd. Located in the beautiful petroleum city - Puyang City in the zhongyuan oil filed located, is a production research and development enterprise with...
API 6A Forging Gate Valve, FC/FL/FLS type
Packaging:
 Wooden Box
Certificate:
 API 6A
Place of Origin:
 China
Transportation:
 Ocean,Land,Air,Express

Api 6A Gate Valves

Lanchi Energy Equipment LLC deals with a wide range of cost-effective products and commitment for global excellent execution of the ventures. It is well known brand for high quality resources and full-fledged...
American Standard Soft Seal Gate Valve
Min. Order:
 1
Place of Origin:
 CHINA
Transportation:
 Ocean

Gate Valve

Lianggong Valve Group design, develop, manufacture, test, sell and serve industry valves, including cast and forged steel/stainless ball valves, gate valves, globe valves, check valves, butterfly valves....
Soft Iron Seal Ring Gasket Flange Connection ASME
Brand:
 JINGWEI
Model No.:
 R45
Place of Origin:
 CHINA
Transportation:
 Ocean

Octagonal Ring Joint Gasket

Wenzhou Jingwei Seals Technology Co., Ltd. is a manufacturer and supplier of threaded products, gaskets & seals, and precision machined components. Jingwei manufactures Ring Joint Gaskets are suitable for...
DOUBLE/SINGLE-LAYER STUFFING BOX SEAL POLISHED ROD API 11B
Brand:
 PYZS
Packaging:
 packed by wooden or steel cases
Supply Ability:
 2000 Set/Sets per Month
Certificate:
 ISO9001;45001;14001
Model No.:
 28
Place of Origin:
 puyang city,henan,china

Stuffing Box

Puyang Zhongshi Group Co., Ltd. was founded in 1996, which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 130 million yuan, with annual...
Cast Steel Pressure Seal Gate Valve
Packaging:Plywood Case
Certificate:PED 97/23/EC, API 6D & ISO9001
Cast Steel Pressure Seal Gate Valve For gate valve with pressure Class 600 / PN100 or higher, Pressure seal bonnet is suggested for better closure, while bolted bonnet is still available for customer's option. The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases....
Pressure Seal Gate Valve
Packaging:Plywood Case
Certificate:PED 97/23/EC, API 6D & ISO9001
Pressure Seal Gate Valve Cast Steel Pressure Seal Gate valves in Buttweld and Flanged end connections. Size Range: 2" thru 24" Pressure Class: 600-4500 Style: Flexible Wedge and Parallel Slide design Materials: A216 WCB, WC6, WC9, C5, C12, C12A, CF8M and special alloys The flexible wedge is a one-piece, fully guided...
Flanged Pressure Seal Gate Valve
Packaging:Plywood Case
Certificate:PED 97/23/EC, API 6D & ISO9001
Flanged Pressure Seal Gate Valve For gate valve with pressure Class 600 / PN100 or higher, Pressure seal bonnet is suggested for better closure, while bolted bonnet is still available for customer's option. The pressure seal design incorporates a metal-to-metal seal that becomes tighter as the pressure increases. The...
Electric Actuated Gate Valve
Packaging:Plywood Case
Certificate:PED 97/23/EC, API 6D & ISO9001
Electric Actuated Gate Valve For better operation performance or in hazardous area, actuators are suggested to achieve automation and remote control of gate valves. Basically, actuators includes electric actuators, pneumatic actuators and hydraulic actuators etc. With the help of various accessories, gate valves could...
China Pressure Seal Gate Valve Suppliers
Gate Valve, also known as a sluice valve, is a 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, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can form a wedge shape or they can be parallel. Gate valves are primarily used to permit or prevent the flow of liquids, but typical gate valves shouldn't be used for regulating flow, unless they are specifically designed for that purpose. Because of their ability to cut through liquids, gate valves are often used in the petroleum industry. For extremely thick fluids, a specialty valve often known as a knife valve is used to cut through the liquid.[1] On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or closed.[2] When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.[3]

Gate valves are characterised as having either a rising or a non rising stem. Rising stems provide a visual indication of valve position because the stem is attached to the gate such that the gate and stem rise and lower together as the valve is operated. Non rising stem valves may have a pointer threaded onto the upper end of the stem to indicate valve position, since the gate travels up or down the stem on the threads without raising or lowering the stem. Non rising stems are used underground or where vertical space is limited.

Bonnets provide leakproof closure for the valve body. Gate valves may have a screw-in, union, or bolted bonnet. Screw-in bonnet is the simplest, offering a durable, pressure-tight seal. Union bonnet is suitable for applications requiring frequent inspection and cleaning. It also gives the body added strength. Bolted bonnet is used for larger valves and higher pressure applications.

Another type of bonnet construction in a gate valve is pressure seal bonnet. This construction is adopted for valves for high pressure service, typically in excess of 2250 psi (15 MPa). The unique feature about the pressure seal bonnet is that the body - bonnet joints seals improves as the internal pressure in the valve increases, compared to other constructions where the increase in internal pressure tends to create leaks in the body-bonnet joint.

Gate valves may have flanged ends which are drilled according to pipeline compatible flange dimensional standards. Gate valves are typically constructed from cast iron, ductile iron, cast carbon steel, gun metal, stainless steel, alloy steels, and forged steels.

All-metal gate valves are typically used in ultra-high vacuum chambers to isolate regions of the chamber