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Welding Gate Valve

Welding Gate Valve

Main Performance Parameters

• Nominal Pressure: PN16~PN160, complete high-pressure series

• Nominal Diameter: DN15~DN300

• Operating Temperature: -29℃~+425℃ (carbon steel); stainless steel and alloy steel are suitable for high-temperature conditions above 600℃

• Connection Method: Butt welding (BW), socket welding (SW), flangeless connection

• Sealing Form: Hard alloy seal, weld overlay seal, high sealing level, pressure and high temperature resistance

Structural Forms

1. Straight-through welded gate valve: Conventional and universal structure, widely applicable to most process pipelines.

2. Angle welded gate valve: 90° inlet and outlet layout, suitable for pipeline bends and compact equipment interface installation positions.

3. Y-type direct-flow welded gate valve: Smooth flow path, lower flow resistance, reducing media resistance and scouring losses.

Product Description

Key Advantages

 

• Welded connection, zero leakage points, zero external leakage, sealing performance far exceeding flanged valves.

• Integral forged valve body, high strength, high pressure resistance, high temperature resistance, and creep resistance, suitable for harsh working conditions.

• Compact structure and small size, saving installation space, suitable for narrow pipe corridors and areas with dense equipment.

• Forced sealing structure, excellent cut-off performance, accurately cuts off the medium, preventing crossflow and leakage.

• Resistant to aging and fatigue, stable operation under long-term high temperature and high pressure conditions, long service life.

 

Applicable Applications

 

• Power plants: High-temperature and high-pressure steam pipelines, boiler systems, thermal power generation pipelines.

• Petrochemical industry: Oil refining, coal chemical industry, hydrogenation units, high-pressure process media transportation.

• Thermal energy industry: Heat transfer oil, superheated steam, high-pressure hot water, high-temperature circulation systems.

• Energy and gas: High-pressure gas, closed-loop transportation pipelines for industrial special gases.

• Precision operating conditions: Chemical and special equipment pipelines requiring no external leakage, explosion-proof, and high airtightness.

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Related Products

Welding Gate Valve

Welding Gate Valve

Main Performance Parameters

• Nominal Pressure: PN16~PN160, complete high-pressure series

• Nominal Diameter: DN15~DN300

• Operating Temperature: -29℃~+425℃ (carbon steel); stainless steel and alloy steel are suitable for high-temperature conditions above 600℃

• Connection Method: Butt welding (BW), socket welding (SW), flangeless connection

• Sealing Form: Hard alloy seal, weld overlay seal, high sealing level, pressure and high temperature resistance

Structural Forms

1. Straight-through welded gate valve: Conventional and universal structure, widely applicable to most process pipelines.

2. Angle welded gate valve: 90° inlet and outlet layout, suitable for pipeline bends and compact equipment interface installation positions.

3. Y-type direct-flow welded gate valve: Smooth flow path, lower flow resistance, reducing media resistance and scouring losses.

Fluorine-Lined Gate Valve

Fluorine-Lined Gate Valve

Basic Definition: A fluoropolymer-lined gate valve is a forced-seal shut-off valve in which the inner surfaces of the valve body, cover, disc, and seat—all in contact with the medium—are entirely lined with a layer of fluoroplastic (PTFE/FEP/PFA/TFM, etc.). Its core structure combines metal load-bearing with fluoroplastic corrosion protection.

Core Structure:
• Valve Body/Cover: Carbon steel/stainless steel shell, lined with fluoroplastic
• Valve Disc/Seat: Fully fluoropolymer-lined, flat/conical seal, axially moving
• Valve Stem: Rising stem or rising/rotating stem, with packing seal
• Actuation: Manual, worm gear, pneumatic, electric

Disc Check Valve

Disc Check Valve

Main Parameters

• Nominal Pressure: PN10~PN40

• Nominal Diameter: DN50~DN1200, with significant advantages for large diameters

• Operating Temperature: -20℃~+200℃, adaptable to high and low temperature conditions depending on the sealing material

• Connection Method: Flange, Wafer, Double Flange, strong installation adaptability

• Sealing Form: Rubber soft seal, metal hard seal, tight seal, sensitive opening and closing

Structural Forms

1. Wafer Butterfly Check Valve: Lightweight and low cost, installed between two flanges, occupying little space.

2. Double-Disc Butterfly Check Valve: Symmetrical structure with double valve plates, smooth opening and closing, low water hammer, suitable for high flow pipelines.

3. Single-Disc Butterfly Check Valve: Simple structure, good flow performance, suitable for conventional water supply and drainage, and industrial pipelines.

Gate

Gate

Working Principle: The valve stem drives the gate to move vertically up and down. When the gate is fully raised, the pipeline is straight and flow is unimpeded; when the gate falls, it presses against the valve seat, blocking the flow of media.

The media can flow in both directions without directional restrictions, and there are no flow direction requirements during installation.

+86 19858780995

+86 19858780995

+86 19858780995

+86 19858780995

19858780995@163.com