Raypak 105A/105B/155A/185A/R185 Unitherm Governor Spring (013792F) mundial An air control box helps

An air control box helps manage equipment operation in a compatible pneumatic-control setup

compatibility

This type of part is especially useful when the original microbellow has cracked

The Praher TM-22-PB multiport valve is a 2 inch female threaded replacement built for compatible filtration systems that need dependable water-routing control

and temperature adjustment is essential to overall spa performance

Raypak 105A/105B/155A/185A/R185 Unitherm Governor Spring (013792F) mundial An air control box helpsThe Raypak Unitherm Governor spring is designed for compatible 105A, 105B, 155A, 185A, and R185 heater applications where the supported governor assembly needs a fresh spring. A spring like this is useful because it helps the Unitherm Governor function the way it was intended, supporting proper thermal and flow related behavior inside the heater. This replacement is especially useful when the original spring is weakened, damaged, or missing, which can