Check Valve, Check Valve Factory supply-Wenzhou Keton Valve Co., Ltd.

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.

Key Features

1. Automatic backflow prevention, purely mechanical self-operated, no drive device required;

2. Two-way protection: protects water pumps and pressure vessels;

3. Simple structure, low failure rate, no daily maintenance required;

4. Complete range of models, suitable for low pressure, high pressure, high temperature, and corrosion-resistant applications.

Product Advantages

• Automatic unidirectional flow, preventing media backflow contamination and equipment reverse rotation damage;

• Simple installation, wide application range, long service life;

• Some models have low flow resistance, not affecting normal pipeline transportation.

Common Materials

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

• Seal: rubber, PTFE, metal hard seal, alloy wear-resistant seal

Applicable Applications

• Water supply and drainage, municipal pipe networks, fire pump rooms;

• Chemical, petroleum, natural gas, oil pipelines;

• Power plant steam, condensate, and heating systems;

• Essential matching valve for pump outlets and compressor downstream applications.

Check Valve

Product Description

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