Can a ball check valve be installed vertically?

September 7, 2019 Off By idswater

Can a ball check valve be installed vertically?

DFT® Check Valves can be installed Horizontal, Vertical Flow up, or Vertical Flow Down. Not all styles of check valves function properly or are suitable for vertical flow directions. When installing a check valve, a horizontal line is always preferred, because it takes gravity out of the equation.

What is a vertical lift check valve?

A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly.

What is the function of the ball check valve?

A ball check valve functions by means of a ball that moves up and down inside the valve. The seat is machined to fit the ball, and the chamber is conically shaped to guide the ball into the seat to seal and stop a reverse flow.

How does a vertical check valve work?

A lift check valve consists of a guided disc that raises (lifts) up off of the valve seat to allow media flow. It requires a cracking pressure to overcome gravity and/or a spring and the guide keeps the disc in a vertical line, so that the disc can be re-seated with the correct alignment and seal.

Can a check valve be installed upside down?

Check valves MUST be installed with the valve’s FLOW arrow pointing in the direction of the flow. In horizontal installations, the designated side must be positioned “up”. Do Not install Check Valve upside down.

When should a check valve be installed?

Check valves are necessary if there is a risk of condensate backflow. For example, when a trap discharges into a common condensate collection line, there is the potential risk of backflow from condensate discharged from other traps, so as a rule a check valve should be installed.

What is the most common type of check valve?

Most common types of Check valves are swing, lift (piston and ball), butterfly, stop and tilting-disk.

What type of valve is a check valve?

Check valves are automatic valves that open with forward flow and close with reverse flow. The pressure of the fluid passing through a system opens the valve, while any reversal of flow will close the valve. Exact operation will vary depending on the type of Check valve mechanism.