How to Connect the Hydrostatic Release Unit

A hydrostatic release unit is a type of valve installed in an in-ground swimming pool. This valve is designed to relieve the pressure of groundwater after the pool is emptied. In-ground swimming pools contain up to 20,000 gallons of water that have up to 150,000 pounds of force. Installing a hydrostatic relief valve prevents the buildup of pressure that can damage the bottom of your pool.

Screwdriver

Instructions

- 1
  Open the main drain valve of the pool to drain the water. If a drain valve is not installed, you may need to use a pump to drain the water.
- 2
  Remove the grating for the main drain, which will be at the deepest part of the pool. Lift the drain grate by using the screwdriver.
- 3
  Disconnect the dress ring by turning it counterclockwise to expose the valve stem.
- 4
  Attach the hydrostatic relief valve onto the valve stem. Turn the hydrostatic relief valve clockwise by hand to tighten.
- 5
  Reconnect the drain ring to the top of the drain, and then set the drain grate back in place.

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