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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.
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Product Description

Main Classifications

 

1. By Structure

• Straight-through gate valve: Most commonly used, for straight-line pipeline installation

• Angle gate valve: For 90° turn pipelines, saving bends

• Direct-flow gate valve: Lower flow resistance, suitable for high flow rates

2. By Connection Method: Flange, Threaded, Welded

3. By Actuation Method: Manual, Pneumatic, Electric, Hydraulic

4. Sealing Type: Soft seal (PTFE), Hard seal (Alloy, Stainless Steel)

 

Core Advantages

 

• Reliable sealing, highly adaptable to high temperature and high pressure conditions;

• Excellent throttling and pressure reduction functions, suitable for pipelines requiring fine-tuning;

• Slow opening and closing, preventing water hammer impact;

• Simple structure, low failure rate, and low maintenance costs.

 

Common Materials and Parameters

 

• Valve Body: WCB carbon steel, 304/316L stainless steel, cast steel, cast iron

• Seal: PTFE, hard alloy, wear-resistant weld overlay

• Pressure: PN16~PN100, Class 150~600

• Temperature: Soft seal: -20℃～180℃ Hard seal: -30℃～425℃

 

Applicable Industries and Operating Conditions


Widely used for water, steam, oil, gas, and weakly corrosive chemical media:

 

• Heating and power plant steam pipelines;

• Chemical, petrochemical, and oil refining pipelines;

• Water supply and drainage, HVAC, and fire protection systems;

• Compressed air, heat transfer oil, and hot water pipelines.

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Related Products

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

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.

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.

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+86 19858780995

+86 19858780995

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