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HomeProductsGeneral-Purpose Valves (Gate Valves, Globe Valves, Check Valves)Fluorine-Lined Gate Valve
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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Product Description

Structural Features

 

1. Fully Fluorine-Lined for Corrosion Protection: The inner wall, gate, and seat are all lined with fluoropolymer, providing complete corrosion resistance and preventing media corrosion, rust, and leakage.

2. Minimal Flow Resistance: Straight-through design, large diameter, and low resistance, suitable for long-distance transport of corrosive fluids.

3. Excellent Sealing: Corrosion-resistant fluoroplastics combined with a soft seal ensure a tight, leak-free seal; wear-resistant, aging-resistant, and scale-free.

4. Robust Structure: The outer shell is made of cast steel/cast iron, providing high pressure resistance, while the inner fluoropolymer lining offers strong temperature and chemical resistance.

5. Easy Installation: Bidirectional flow, no installation direction requirements, flange connection, simple disassembly and maintenance.

 

Core Advantages

 

1. Resistant to strong acids, strong alkalis, strong oxidants, and organic solvents; extremely versatile.

2. Impermeable, corrosion-resistant, resistant to acids, alkalis, salts, and chemical solvents.

3. Media does not contact metal, extending the lifespan of valves and piping systems.

4. Fully open, non-erosion sealing surface; long service life.

5. No dead corners, less prone to material accumulation; suitable for corrosive wastewater and chemical liquids.

Materials and Parameters

• Valve body material: Cast iron, cast steel WCB

• Lining material: PTFE (F4), F46, PFA

• Pressure rating: PN10, PN16

• Applicable temperature: -20℃～180℃

• Connection method: Flange connection

• Drive method: Manual, electric, pneumatic

 

Applicable Media and Industries

Applicable media: Hydrochloric acid, sulfuric acid, nitric acid, liquid alkali, sodium hypochlorite, brine, corrosive wastewater, and various highly corrosive chemical fluids.

Application industries: corrosion-resistant pipelines in chemical, pharmaceutical, pesticide, electroplating, environmental desulfurization, wastewater treatment, pickling and phosphating, fine chemical and other industries.

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Related Products

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.

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 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.

+86 19858780995

+86 19858780995

+86 19858780995

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