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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

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.

Globe Valve

Globe Valve

Working Principle: The medium flows in from below the valve seat, passes through the throttling gap between the valve disc and the valve seat, and flows out from the outlet. The valve disc stroke is controlled by the rise and fall of the valve stem, changing the flow cross-sectional area to achieve both shut-off and throttling. When closed, the axial pressure of the valve stem presses against the sealing surface to achieve a tight seal.

Structural Features:
1. Unidirectional Flow: Medium enters from a lower position and exits from a higher position; cannot be installed in reverse, requiring directional control during installation.

2. Good Sealing Performance: Plane/conical surface seal, tight closure, low leakage.

3. Excellent Throttling Performance: Controllable stroke, suitable for small-amplitude pressure and flow adjustment.

4. Relatively High Flow Resistance: S-shaped flow path in the pipeline, resistance coefficient higher than gate valves and ball valves.

5. Short opening and closing stroke, simple structure, convenient maintenance and replacement of parts.

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 stop valve

Fluorine lined stop 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

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