The Robertshaw 41-409 Hot Surface Ignitor is a high-performance silicon carbide ignitor engineered for demanding HVACR applications

Technicians should perform a continuity test while the sensor is exposed to temperatures below 34°F (closed) and above 60°F (open) to verify the internal switch is functioning correctly

Optimized pitch geometry encourages rapid water evacuation to prevent stagnant pooling

For technicians servicing commercial HVACR units

As a Single Pole Single Throw (SPST)

Watts 0009257 Valve Freon The Robertshaw 41-409 Hot SurfaceThe Watts 0009257 is a trade grade 3 4 inch LF25AUB Z3 water pressure reducing valve engineered for rigorous commercial and residential applications. Designed to handle supply pressures up to 300 PSI, this lead free pressure regulator utilizes a cast copper silicon alloy body to ensure compliance with potable water safety standards. It features a serviceable in line design with a replaceable seat module and an integral stainless steel strainer,