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.
How far should a check valve be from a pump?
Many well pumps have built-in check valves. Even if a pump does have a built-in check valve, we recommend that a check valve be installed in the discharge line within 25 feet of the pump and below the draw down level of the water supply.
Where is a single check valve used?
fluid category 2 protection
A single check valve can be used for fluid category 2 protection, where there may be an aesthetic change such as temperature, taste or odour. A double check valve is used for fluid category 3 protection, where there is a risk of substances of low toxicity such as common disinfectants.
Can a swing check 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.
Can a ball check valve be installed horizontally?
The Atomac ARV2 ball check valve will function properly in a horizontal application when installed correctly. (When installed horizontally the valve may not provide adequate back flow protection in a gas service).
Does a check valve go before or after a pump?
If an additional check valve is required, it should be placed after the pressure tank to allow the pump and discharge pipe to remain pressurized. The check valve slamming shut from a full open position when the pump is cycling repeatedly is the main cause of check valve failure.
How long does a check valve last?
Now for the verdict: in most cases, a check valve will last approximately 10 years.
Do mixer taps need check valves?
A shower with a mixer tap (blending hot and cold water) requires a Single Check Valve (type EB) on the hot and cold supplies if the pressures are unbalanced. The check valves are sometimes incorporated in the mixer tap housing.
Where to put check valves?
Manufacturers recommend sump pump check valve placement be three feet (36 inches)above the sump pump. Many sump pump pits are around 24 inches (two feet) deep therefore the check valve would be placed 12 inches (one foot) above the sump pit cover or twelve inches above the basement floor.
Is this check valve necessary?
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 a quiet check valve?
A Quiet Check Valve is a great solution when extremely quiet operation is desired. Quiet Check Valve offer all the features as the standard check valve, with the addition of a spring-loaded hinged flapper mechanism which forces the flapper to fully close against fluid flow as the pump shuts down.