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Axial Flow Check Valve

An Axial Flow Check Valve, also known as a nozzle check valve or silent check valve, is a type of non-return valve designed to allow fluid to flow in one direction while preventing backflow. Unlike traditional swing or lift check valves, the axial flow check valve employs a streamlined, axial (straight-line) flow path, which minimizes turbulence and energy loss.

Key Features:

1. Straight-Line Flow Path: The valve’s axial design allows for a smooth, uninterrupted flow, reducing pressure drop and improving efficiency.

2. Fast Response: Its lightweight piston or disc reacts quickly to changes in flow conditions, minimizing the risk of water hammer—a pressure surge or wave caused when a liquid in motion is forced to stop or change direction suddenly.

3. Compact and Lightweight: The axial flow design leads to a smaller, lighter valve that is easier to install and maintain.

4. Silent Operation: The valve’s streamlined flow path and quick closure mechanism ensure minimal noise during operation.


Axial flow check valves are commonly used in industries such as oil and gas, water treatment, chemical processing, and power generation. They are ideal for applications requiring high efficiency, low flow resistance, and protection against water hammer.

Three Way Ball Valve

4 Way Ball Valve

Butt-Weld Axial Flow Check Valve



One-piece body, has very short structural length, is only 1/4 ~ 1/8 of the flange check valve. Low volume and light weight, its weight is only the slow closed check valve 1/4 ~ 1/20;
Wonderful sealing carrier makes the valve able to be installed at any direction and the disc can tough the seat sealing perfectly.
The disc stroke is short, the impact of closing the valve is small; and disc closing fast, water hammer pressure is small
Sensitive action, good sealing performance.
Long service life and good reliability.

Technical Specifications:

  • Connection End: Flanged: ASME B16.5; ASME B16.47; Butt-welding ASME B16.25
  • Face-to-Face:ASME B16.10, API 6D
  • Design Standard: ASME16.34, API 6D
  • Test and inspection: API 598, API 6D

Product information:

  • Structure type: Axial flow
  • Body type: Straightway type
  • Seat type: Soft /metal seat
  • Temperature range: -196℃ ~ 595℃
  • Pressure range: CLASS 150 – CLASS 2500
  • Diameter range: NPS 2 – NPS 24 (DN 50 ~ DN 600)
  • Suitable Service: Water, Steam, oils, air-fuel mixture and corrosive medium etc..

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