An irrigation check valve is your answer for those annoying puddling situations in your irrigation system.  Any irrigation system requires ups and downs to fit the landscape, and water will always seek out the lowest points in an irrigation system when that system is at rest.  An irrigation check valve prevents this unsightly puddling from

Backwater valves can be installed in the basement of your home at the exit point, or in the sewer lateral outside of the building.  By installing a backwater valve, the homeowner is reducing their exposure to the possibility of backflow, the dangerous and toxic reversal of water-flow caused by a sudden drop in water pressure

A double detector check valve is a double check assembly used in backflow prevention to protect potable water supplies from contamination. This particular type of backflow preventer used two check valves assembled in a series, and this is done for two reasons: one, if one check valve fails, another is still in place; and two,