Application Information

  • Why does the flow rate need to be above 5 feet per second through a swing check valve?

    A swing check valve design relies on the disc being held against the upper part of the valve body when the check valve is in the open position, to prevent the disc from fluttering in the flow of media. Flow rates below 5 FPS will typically not hold the disc firmly against the body.

  • What is water hammer?

    Water hammer, also known as hydraulic shock, is a phenomenon that occurs when a fluid in motion is suddenly forced to stop or change direction. This abrupt change causes a pressure surge or wave in the piping system, which can lead to loud banging noises, vibrations, and even damage to pipes, fittings, or equipment.

Product Information

  • What is a swing check valve?

    A swing check valve is a one-way valve designed to allow fluid to flow in only one direction while preventing backflow. It operates using a hinged disc that swings open when fluid flows in the desired direction and swings closed when the flow stops or reverses.

  • What makes a swing check valve slam?

    A swing check valve can slam when it closes suddenly due to reverse flow or pressure changes in the system. This rapid closure can cause a water hammer, leading to loud noises, vibrations, and potential damage to the piping system.

  • How does the disc “self-align”?

    Swing check valves typically are designed with a disc mounting arm that does not hold the disc rigidly but allows the disc to float and self-align to the body seat ring.

  • What does “full waterway” mean?

    A full waterway means the waterway of the valve (or “Port”) maintains at least the same area as the pipe it is sized for.