Waterway 90° Elbow [Ell] [1-1/2" Slip x 1-1/2" Slip] [w/Dual Thermowell] (400-5540) bathparts A pressure switch is useful

A pressure switch is useful because it helps verify proper system conditions before the heater continues operating

or otherwise no longer presenting or operating correctly

better energy management

5 inch MBT/FPT connections

Raypak air shutter

Waterway 90° Elbow [Ell] [1-1/2" Slip x 1-1/2" Slip] [w/Dual Thermowell] (400-5540) bathparts A pressure switch is usefulThe Waterway 400 5540 90 degree elbow is designed for compatible 1 1 2 inch plumbing applications and includes dual thermowells. A fitting like this is especially useful because it combines a standard directional turn with dedicated thermowell provision, making it more versatile in systems where temperature related monitoring or control integration is needed. Using a purpose built Waterway elbow with dual thermowells can simplify the plumbing layout