Waterco Main Drain Valve & Stem Complete Unit including Hydrostatic Valve Part 29300
 
Waterco Main Drain Valve and Stem Unit
Includes 50mm Hydrostatic Valve
Genuine Waterco Part - 29300
Manufactured from impact resistant thermoplastic (ABS plastic)
 
Valve  aids to stop your pool from lifting out of the ground or "popping" when the water level is low or when there is water under the pool
Waterco Main Drain Valve and Stem Complete Unit with Hydrostatic Valve Part 29300
Long ground water spear detects underground water at a greater depth and causes the hydrostatic valve to release it before it can build up to a level that may damage your pool