Extreme Durability: Forged from black iron to resist corrosion and handle high-pressure fluctuations in commercial steam loops

the provided silicone-based grease is essential for seating the O-rings correctly and preventing binding during valve operation

If the switch is reset but shows an open circuit (no continuity)

The integrated shunt facilitates specialized wiring configurations

Verify the flow arrow on the housing during installation to ensure proper refrigerant filtration

Rheem-Ruud 47-21900-13 Limit Switch Extreme Durability: Forged from blackThe Rheem Ruud 47 21900 13 Limit Switch is a critical safety component designed for precise thermal regulation in high efficiency furnace applications. This fixed temperature limit control features a 150 degree Fahrenheit open temperature set point, making it essential for preventing heat exchanger overheating. Engineered as a manual reset limit switch with an SPST normally closed circuit configuration, this part ensures the burner circuit opens