Wafer check valves have a solid thermoplastic body with a very thin "wafer" profile that makes them an ideal check valve for applications that require valves with short takeout lengths. ... Wafer check valves are used in applications where it is essential to ensure fluid flow passes in only one direction.
What is a swing check valve?
In swing check valves, a flapper will swing away to allow forward flow of a fluid or gas. When it is time to stop the flow, the flapper will swing back onto the seat, closing the valve automatically as the system pressure decreases. Swing check valves are notable due to their large flow capacity.Jun 8, 2021
When would you use a swing check valve?
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.
The three main types of check valves we offer are ball, piston, and stop check valves.
Which type of valve is the 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.
What type of check valve is best?
Lift Check Valves They have no external moving parts and are known to be economical and reliable. Over time, these types of valves can have high energy costs because the disc remains in the flow stream during operation. Silent check valves are known for their quiet closure. Flow pushes the disc to allow forward flow.Oct 30, 2018
What are check valves used for in plumbing?
' The main purpose of a check valve is to prevent backflow in the system. Figure 1 shows an example of a check valve. A check valve relies on a pressure differential to work. They require a higher pressure on the input side of the valve than the output side to open the valve.
Can wafer check valves be installed vertically?
Check valve can be installed in horizontal or vertical piping runs, with the flow running upward. Mounting for vertical installations is critical.
What check valves can be installed vertically?
We hear many people ask, “Can swing check valves be installed vertically?” The simple answer to that question is yes, swing check valves can be installed in both directions.May 8, 2020
Can you install a double check valve vertically?
If installed in a vertical configuration, it must be a minimum of 6 inches from floor, and no higher than 5 feet to the centerline of the #2 shut-off valve. All assemblies must maintain a sufficient clearance from any wall, and 24 inches in front of assembly to ensure accessibility for maintenance and testing.
Can a backflow valve be installed vertically?
There are backflow preventers that can be installed horizontally, vertically (up or down) and other orientations that can make an installation easier. The key point to realize however is that they can only be installed in the orientation that the approval agency has determined they will work in.
What are two types of check valves?
Most common types of Check valves are swing, lift (piston and ball), butterfly, stop and tilting-disk.