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Check Valve

Check Valve

African Valve is a dependable Check Valve Supplier in Algeria, offering robust non-return valves that ensure unidirectional flow in piping systems. Our check valves are engineered to prevent backflow and protect pumps, compressors, and pipelines from reverse pressure damage. With a variety of types, sizes, and materials, we cater to both low-pressure and high-pressure applications across critical industries.

Function & Working

Check valves operate automatically, opening with forward flow and closing under reverse flow pressure. They rely on differential pressure and gravity or spring-assisted mechanisms to shut the valve disc, ensuring seamless non-return functionality without manual operation.

Advantages

  • Prevents backflow and equipment damage

  • Operates without external actuation

  • Minimizes water hammer in pipelines

  • Compact and easy to install

  • Suitable for both vertical and horizontal mounting

Types Offered

  • Dual Plate Check Valve

  • Single Plate Check Valve

  • Lift Check Valve

  • Non-Slam Swing Check Valve

  • Pressure Seal Swing Check Valve

  • Tilting Disc Check Valve

  • Swing Check Valve

  • Forged Steel Swing Check Valve

Industries Served

  • Oil & Gas

  • Petrochemical

  • Water Treatment

  • Marine and Offshore

  • Power Generation

  • HVAC and Utility Networks

Key Components

  • Valve Body – Built from durable alloys for corrosion and pressure resistance

  • Disc/Plate – Moves freely or spring-loaded to allow or block flow

  • Seat Ring – Machined for bubble-tight sealing

  • Hinge Pin or Guide – Ensures precise disc movement

  • Spring (if applicable) – Assists rapid closure to prevent water hammer

  • Bonnet – Provides access for maintenance

Technical Specifications

  • Design Standards: API 594, ASME B16.34, BS 1868

  • Body Materials: WCB, CF8M, CF3M, WC6, Bronze, Super Duplex, Monel, Alloy 20, Ductile Iron

  • Trim Options: SS304, SS316, Stellite, Monel

  • Pressure Ratings: Class 150 to 2500 / PN10 to PN160

  • Size Range: DN15 to DN1200

  • End Connections:

    • Flanged (RF or RTJ – Raised Face or Ring Type Joint)

    • Butt Weld (BW – permanent weld for high-pressure lines)

    • Socket Weld (SW – compact welds for small diameter piping)

    • Threaded (NPT – National Pipe Thread)

  • Actuation Options: Not required (self-acting design)

  • Special Features:

    • Non-slam design to reduce shock and vibration

    • Optional soft seats for enhanced sealing

    • Fire-safe and corrosion-resistant variants

    • Engineered by a certified Check Valve Supplier in Algeria

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