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Check Valve

BOLON Fluid Control (Zhejiang) Co., Ltd.

Introduction to Check Valve

Check Valve Series is a vital one-way flow control valve designed to prevent fluid backflow automatically, requiring no manual or actuator operation. It opens when forward fluid pressure exceeds a certain threshold and closes via gravity, spring force, or reverse pressure, ensuring unidirectional flow. Its core components include valve body, disc, seat, and optional spring. Common types are swing check and lift check valves—swing check for large flow rates, lift check for high-pressure applications. Simple in structure and highly reliable, it is widely applied in water treatment, petroleum, chemical, and power industries to protect pumps and pipeline systems. Potential issues like water hammer can be alleviated by proper model selection and installation.
  • API Standard Titanium B367 Gr.C-2 Flanged Swing Check Valve

    API Standard Titanium B367 Gr.C-2 Flanged Swing Check Valve

    The swing type titanium check valve is a valve that can automatically prevent fluid backflow. Under ...

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    • BOLON Fluid Control (Zhejiang) Co., Ltd.

    BOLON Fluid Control (Zhejiang) Co., Ltd. focuses on producing 2205 (4A) valves, 2507 (5A) valves, CN7M valves, CD4MCu valves, 254Mo valves, 2520 (310S) valves, 904L valves, TA2, TA10 titanium alloy valves, 702 zirconium alloy valves, N6 pure nickel valves, N08810, N08825, N06600, N06625 series nickel based alloy valves, HC276, HC22, HB series hastelloy valves, M400, M500 series Monel alloy valves, C95800 series copper alloy valves and other special material valves.

    BOLON Fluid Control (Zhejiang) Co., Ltd. is a leading and experienced valve manufacturer in the industry. The independently produced valves include ball valves, butterfly valves, plug valves, gate valves, globe valves, check valves, etc. Multiple product sizes, pressure levels and valve body materials are available for selection based on working conditions, media, and customer needs. Our flagship products are metal hard sealed ball valves and pure metal bidirectional pressure hard sealed butterfly valves that maintain long service life and zero leakage filtration under harsh working conditions such as high temperature, high pressure, and multiple impurities, as well as various valves made of corrosion-resistant special high alloy materials.

    BOLON provides valves to various industries worldwide, including power, oil&gas, refining, petrochemical, mining, shipbuilding, metallurgy, and aviation. All products are designed, manufactured, and installed