How does a silent check valve work?
A silent check valve utilizes a spring to assist the poppet in closing the check valve prior to fluid flow reversal. This eliminates the hydraulic shock also known as water hammer. Water hammer is a result of the sudden stoppage of flow in a fluid process system.
Will a check valve stop water hammer?
“Any spring-loaded, poppet-style check valve is going to prevent water hammer because they close before reverse flow begins. It is one of their primary purposes,” explains Strait. well in vertical or horizontal positions with proper spring selection.
Which is better swing valve or check valve?
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. Depending on the spring selection, this type of valve will work well in virtually any flow orientation.
How do you stop water hammer in pipes?
Tips for Stopping Water Hammers
- Drain your pipes and refill them to create new air chambers. One method for eliminating water hammers is to create new air chambers that will serve as cushions for shockwaves.
- Tighten mounting straps.
- Install a water hammer arrestor.
How can water hammer be avoided?
The most important way to prevent water hammer is to remove the water from the steam lines before passing the steam again through them. Water is removed from the steam lines using drain connections. All the water should be drained out to make the lines clear.
Should a check valve be installed vertically?
When installing a check valve, a horizontal line is always preferred, because it takes gravity out of the equation.
Can you install a check valve upside down?
The compromise is that the valve can be installed in other orientations. Installation upside down is not recommended because of the possibility of dirt build-up in the bonnet.
Is a backwater valve the same as a check valve?
How They Differ: Check Valve vs Backwater Valve. The two valves are similar mechanisms with slightly different approaches to preventing backflow. A check valve is usually used to prevent liquids from contaminating a clean water supply, for example. A backwater valve is often intended to protect your sewage line, though …
Why do pipes knock when water is turned on?
The knocking noise is caused by the expansion and contraction of water within the metal or plastic pipes in your house. When water runs through a pipe it heats up or cools down, causing it to expand or contract.