Waterway Pump Union [1-1/2" FBT x 1-1/2" FPT] (400-4230) marathonelectric A thermostat helps regulate the

A thermostat helps regulate the operating temperature in a compatible heater system

5 kW flo thru heater for compatible Cal Spas applications

A return header is useful because it helps manage water flow through the heater and serves as one of the key structural sections of the assembly

Helps extend control-system reach cleanly over longer distances

Application-focused replacement design for Correct Tech

Waterway Pump Union [1-1/2" FBT x 1-1/2" FPT] (400-4230) marathonelectric A thermostat helps regulate theThe Waterway 400 4230 pump union is designed for compatible pump plumbing applications using a 1 1 2 inch female buttress thread connection and a 1 1 2 inch female pipe thread outlet. This style of union is useful where the pump must remain removable for service while the downstream plumbing requires a threaded female connection rather than a slip or spigot tailpiece. That specific connection format makes this Waterway union especially practical in