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HomeProductsGeneral-Purpose Valves (Gate Valves, Globe Valves, Check Valves)Forged Steel Gate Valve
Forged Steel Gate Valve

Forged Steel Gate Valve

Basic Structure A forged steel gate valve is a valve in which the closing element (gate) moves perpendicular to the centerline of the flow path. Its opening and closing element is the gate, and its movement direction is perpendicular to the fluid direction. It is typically used only for fully open or fully closed applications and does not have regulating or throttling functions.

The gate of a forged steel gate valve usually has two sealing surfaces. The most common type of gate valve has a wedge-shaped sealing surface, and the wedge angle varies depending on the valve parameters.
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Product Description

Main Parameters

 

• Nominal Pressure: PN16～PN160, suitable for high-pressure and high-temperature high-pressure conditions

• Nominal Diameter: DN15～DN200, mainly for small-diameter high-pressure pipelines

• Operating Temperature: Carbon steel -29℃～425℃; Stainless steel/alloy steel can withstand temperatures above 600℃

• Valve Body Material: A105, 304, 316L, F11, F22, etc., integrally forged materials

• Sealing Grade: Hard seal and soft seal options are available, with stable sealing performance and strong pressure resistance.

 

Structural Forms

 

1. Wedge-type single gate valve: Simple structure, high cost-effectiveness, strong versatility, mostly used in conventional steam and oil pipelines.

2. Wedge-type double gate valve: Automatically compensates for sealing gaps, resistant to high temperature and pressure, and provides long-lasting and stable sealing.

3. Integral welded type: No external leakage points, robust structure, creep resistant, mostly used in power plants and high-temperature and high-pressure special equipment.

 

Core Advantages

 

• Integral forging process, high valve body density and strength, resistant to high pressure, impact, and cracking.

• Straight-through full-bore flow channel, minimal flow resistance, no pressure loss in media transport.

• Bidirectional flow, no installation direction restrictions, convenient on-site pipeline installation.

• Excellent temperature and pressure resistance, suitable for harsh conditions such as high-temperature steam and high-pressure oil and gas.

• Compact structure, uniform wall thickness, good sealing performance, low leakage risk, and long service life.

 

Applicable Operating Conditions

 

• Power industry: Thermal power boilers, high-temperature and high-pressure steam, heating networks, power generation supporting systems.

• Petrochemicals: Oil refining units, hydrogenation processes, high-pressure chemical media transportation pipelines.

• Gas Energy: High-pressure natural gas, coal gas transportation, pressurization pump stations, gathering and transmission pipelines.

• Industrial Heat: High-temperature heat transfer oil, superheated steam, high-pressure circulating water, boiler room systems.

• Special Equipment: High-pressure reactors, heat exchange equipment, pressure vessel inlet and outlet shut-off control.

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Related Products

Welding Globe Valve

Welding Globe 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.

Check Valve

Check Valve

Working Principle: When the medium flows in the forward direction, the fluid pressure opens the valve disc/valve core, allowing the valve to open. When the medium flows in the reverse direction or the pressure reverses, the valve automatically closes and seals itself due to its own weight and the pressure of the reverse medium, completely blocking backflow without manual or electrical control.

Main Classifications and Structures:
1. Swing Check Valve: The valve disc swings around a pin. Commonly used in large-diameter applications, it has low flow resistance and smooth passage, suitable for water, steam, and oil.

2. Lift Check Valve: The valve disc moves vertically up and down along the valve stem, providing better sealing performance. Often used in small-diameter, high-pressure applications.

3. Wafer Check Valve: Ultra-thin structure, small size, low cost. It is clamped between two flanges for easy installation.

4. Butterfly Double-Disc Check Valve: Double-disc structure, sensitive opening and closing, good buffering, suitable for large-diameter water supply and drainage, and industrial pipelines.

5. Silent Check Valve: With a buffer structure, it reduces water hammer and noise. Commonly used in buildings and pump rooms.

Fluorine-Lined Check Valve

Fluorine-Lined Check Valve

Main Performance Parameters

• Nominal Pressure: PN6～PN25

• Nominal Diameter: DN15～DN300

• Operating Temperature: -50℃～+150℃ (depending on lining material; PFA and TFM modified fluoropolymer linings can withstand temperatures up to 260℃)

• Sealing Class: Class VI, extremely leak-proof

• Applicable Media: Strong acids, strong alkalis, strong oxidizers, organic solvents, hydrofluoric acid, aqua regia, and other highly corrosive media

Structural Forms

1. Lift Type (H41F46): Compact structure, excellent sealing performance, moderate flow resistance, suitable for horizontal pipelines.

2. Swing Type (H44F46): Single-plate structure, large diameter, low flow resistance, suitable for high-flow, large-diameter pipelines.

3. Vertical Type (H42F46): Adapted for vertically upward-installed pipelines, unidirectional backflow prevention, dedicated to vertical operating conditions.

Fluorine-Lined Gate Valve

Fluorine-Lined Gate Valve

Working Principle:
The valve stem drives the gate to rise and fall vertically, controlling the flow of the pipeline; the medium only contacts the fluoroplastic lining layer and does not directly contact the metal valve body, completely isolating it from acid and alkali corrosion; it allows bidirectional flow without flow direction restriction, and is only used for switching off, not for throttling or regulating.

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+86 19858780995

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