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Home > Products > Steel Structures > Gate Valve > Stainless steel gate valves

Stainless steel gate valves
Stainless steel gate valves
Stainless steel gate valves
Stainless steel gate valves
Stainless steel gate valves

Stainless steel gate valves

Payment Type: L/C,T/T
Incoterm: FOB,CFR,CIF
Min. Order: 1 Piece/Pieces
Delivery Time: 30 Days

Basic Info

    Model No.: USA-106

    Tolerance: High Accuracy(ISO2768, ISO5817, ISO13920)

    Inspection: Material, Construction, Dimension, Welding Seam, N

    Standard: AISI, ASTM, BS, DIN, GB, JIS

    Certificate: BV CCS ISO

    Marine Engineering: Dredging Support

    Dimension: As Per Drawing, As Large As We Can

    Application: Dredging And Marine Parts

    Material: Casting, Fabricated High Tensile Steel

    Coating: Sa2.5 Blasted And Two Or Three Layers Painted With

    High Pressure Gate Valve: Stainless Steel Gate Valves

Additional Info

    Packaging: bulk package and bulk vessel transportation container package and container transportation

    Brand: UniSite

    Transportation: Ocean,Land

    Place of Origin: china mainland(zhejiang)

    Certificate: BV/ISO/CCS

Product Description

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 Gate Valve is used to cut through the liquid.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 tends to vibrate from the fluid flow.

Stainless Steel Gate Valves


Working principle of the gate valve

Gate valves are actuated by a threaded stem which connects the actuator (e.g. handwheel or motor) to the gate. They are characterised as having either a rising or a nonrising stem, depending on which end of the stem is threaded. Rising stems are fixed to the gate and rise and lower together as the valve is operated, providing a visual indication of valve position. The actuator takes the form of a nut which is rotated around the threaded stem to move it. Nonrising stem valves are fixed to, and rotate with, the actuator, and are threaded into the gate. They may have a pointer threaded onto the upper end of the stem to indicate valve position, since the gate's motion is concealed inside the valve. Nonrising 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 of the pressure seal bonnet is that the bonnet ends in a downward-facing cup which fits inside the body of the valve. As the internal pressure in the valve increases, the sides of the cup are forced outward. improving the body-bonnet seal. Other constructions where the seal is provided by external clamping pressure tend 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


Materials
All fabricated steelwork used in the construction will be to manufacturing standard of normal or classification society.
All materials proposed will be selected to comply with the latest Health and Safety Rules.
Paint systems for hull protection will be of the highest quality (Hempel, Inter, Sigma, Jotun)


Welding
All welding will be performed in accordance with drawing and order and UniSite experience and all welding will be continuous and full penetration.

Workmanship
The workmanship have good marine practice. Care are taken to ensure fair lines, smooth surfaces and neat welding.

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Photos of our Stainless steel gate valves

high pressure gate valve

pressure seal gates valve for sale

pressure seal gates valve

stainless steel gate valves


Our service
Besides above the general specifications, we can also supply some specific dredge valve gate and other similar steel structure as clients' requirements.

Package and shipping
bulk package and bulk vessel transportation
container package and container transportation



How to contact us?

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Looking for ideal High Pressure Gate Valve Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Stainless Steel Gate Valves are quality guaranteed. We are China Origin Factory of Pressure Seal Gates Valve. If you have any question, please feel free to contact us.

Product Categories : Steel Structures > Gate Valve

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Kevin Mei

Mr. Kevin Mei

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Tel:86-574-87053650

Fax:86-574-87889071

Mobile Phone:+8618957885266

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Address:11/F,BLOCK C15,LANE 299,GUANGHUA ROAD,HI-TECH PARK, Ningbo, Zhejiang,China, Ningbo, Zhejiang