PVC true union ball check valves are used in systems that allow water to flow in one direction and also prevent backflow in the line. ... These valves are made from sturdy gray PVC material and are made to withstand pressures suited for PVC materials.
What are the three different types of check valves?
Check valves are unidirectional valves that provide unobstructed flow in one direction as long as flow pressure remains constant and protect the piping system against reverse flow. The three main types of check valves we offer are ball, piston, and stop check valves.
What is the difference between a check valve and a swing check valve?
The difference between swing check valves and spring check valves. The flapper in a swing check valve 'swings' off the seat to allow forward flow and then swings back onto the seat when the flow is stopped. In contrast, a spring loaded check valve incorporates a spring to assist in closing the check valve.Jul 1, 2020
What is a swing check valve used for?
Swing check valves have many uses, from sewage systems and wastewater treatment to firefighting, power plants, and various household items. One of the most commonly known examples of this valve type is the swing check valve that allows water to enter a toilet's tank while blocking the reverse flow.
What is the difference between wafer check valve and swing check valve?
Because wafer check valves are flanged in place, there isn't much room for the disc to open in the pipe line. That means flow is often restricted with a wafer check valve. Swing check valves on the other hand, have a molded body that creates room for the disc to swing open fully, thus allowing full flow.Aug 7, 2015
Is a swing or spring check valve better?
Since spring check valves are functional in vertical applications, they offer significantly more versatility than swing check valves, and are much more likely to fit with preexisting piping configurations. ... Spring check valves also offer the advantage of reducing water hammer.Jun 8, 2021
What happens if check valve is backwards?
Installation Orientation Often times, there is an arrow on the valve housing to signal the flow direction. ... If it is backwards, flow will not be able to move through the system and a build-up of pressure could cause damage.
Can you install a check valve 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.
Will a check valve work horizontally?
Check valve can be installed in horizontal or vertical piping runs, with the flow running upward.
Which way does a check valve face?
Check valve design is simple and effective, and about the only thing that can be done incorrectly when installing them is to place them in the line backward. They come with an arrow or another mark to indicate which direction to place the valve in the line. The arrow should point in the direction of the airflow.Jan 27, 2020
Where should a check valve be installed?
Check valve can be installed in horizontal or vertical piping runs, with the flow running upward. Mounting for vertical installations is critical.
Where is the best place to put a check valve on a sump pump?
Sump pump check valves should be installed close to the floor after the pump, as shown by arrow #1. This will reduce the amount of water that drains back to the pump after each cycle.