Main Drain Hydrostatic Relief Valve Collection Tube – 1-1/2 and 2 Inch – Two Pack

This is a Hayward Slotted Collector Tube for Main Drains: 1-1/2 Inch x 2 Inch FIP. For installations utilizing a hydrostatic relief valve (SP1056), using a collector tube (SP1055) will maintain a clear path to the hydrostatic valve. At least one hydrostatic relief valve in a set of suction outlets will allow hydrostatic uplift pressure caused by ground water to be relieved into the pool or spa.