Pentair UltraTemp/ThermalFlo 70/120 Low Pressure Switch (473656Z) poolparts Choosing the correct low-flow replacement

Choosing the correct low-flow replacement helps preserve intended compatibility and more dependable heating behavior

This replacement is especially useful when the original pump is noisy

The Waterway 400-5680 union assembly is designed for compatible plumbing applications and includes a 2 inch union nut with a 2 inch spigot by 1-1/2 inch slip tailpiece and gasket

Replacing a cracked

Pentair UltraTemp/ThermalFlo 70/120 Low Pressure Switch (473656Z) poolparts Choosing the correct low-flow replacementThis low pressure switch is used in compatible Pentair UltraTemp and ThermalFlo heat pump systems to monitor refrigerant side pressure conditions. It helps the equipment respond to low pressure situations that may indicate airflow problems, refrigerant issues, temperature conditions, or other system faults. A failed switch can prevent operation, cause intermittent shutdowns, or trigger service diagnostics. Replacement should follow proper