Hydrostatic Relief Valve - ABS - 1-1/2 and 2 Inch schedule_ABS/PVC This item is fully compatible

This item is fully compatible and interchangeable with Anthony 7x7 #APCB39

except the NAJO Sports Board

Reagents are stored in a sturdy blue case and include PoolMaster liquid reagents Number 1 Chlorine/Bromine Indicator

machined acrylic meter body

Tube to Pipe

Hydrostatic Relief Valve - ABS - 1-1/2 and 2 Inch schedule_ABS/PVC This item is fully compatibleThis is an ABS Hydrostatic Relief Valve for a 1 1 2 inch internal NPT or 2 inch NPT sump. This relief valve is made of corrosion resistant ABS plastic. It helps prevent pool damage due to external hydrostatic pressure beneath the pool shell when the pool is drained. 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. Replacing your