Hydrostatic Valve Replacement for your Swimming Pool

Aqualine Pool Resurfacing recommends all swimming pool owners consider the age of their pools Hydrostatic valve when their swimming pool first starts to leak.  It should be your first line of attack before obtaining expensive pipe pressure testing and leak detection services.

In 50% of cases most of the water is being lost from the old worn out Hydrostatic valve.    

Hydrostatic valves are relatively inexpensive to replace.  In fact the hydrostatic valve should be replaced every five years to ensure you have a good seal and your swimming pool is not loosing water. 

Aqualine Pool Resurfacing can replace your hydrostatic valve whether your pool is full or empty. 

The cost of this service is from $150.00 incl GST.

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How the Hydrostatic Valve Works

The Hydrostatic relief valve is located in the deepest part of your swimming pool.  It may be under the main drain cover or in its own box situated on the bottom of the swimming pool.

The purpose of the Hydrostatic relief valve is to open allowing the ground water to enter the pool to keep the equilibrium and to relieve  build up of pressure that occurs from underneath the swimming pool.

Most Main Drain assemblies are designed with the same major components - see picture below.

• The Grate and Dress ring sits in the tile or marblite on the floor while the remainder of the Main Drain assembly is cast in to the concrete of the floor.
• The Dress Ring does not have to touch the body of the main drain.
• The Main Drain must be installed at the deepest point of the swimming pool so the water is able to drain completely from the swimming pool.
• The connection to the skimmer allows for a certain amount of water to flow naturally from the bottom of the swimming pool in to the skimmer.
• The valve stem protrudes into the gravel pit below the structure of the pool so the water can drain into the pool easily.
• The hydrostatic valve is flitted into the base of the drain to stop water going out but allowing high pressure water in so the pool does not lift out of the ground.