This hardware set is built to withstand the rigorous thermal demands of HVAC compressor hardware environments

Industrial Grade: High-density black ink designed to withstand the humidity and temperature swings of mechanical rooms

Common Questions for HVACR Technicians What is the maximum proof pressure for the E1H-H15

Common Questions Is this kit compatible with Ultra Series 3 or 4 boilers

Enhanced Reliability: Resolves common hot water heater burner issues such as ignition delays

Crandall Stats & Sensors 2390-501-CSS Switch 318820-201 This hardware set is builtThe Crandall Stats & Sensors 2390 501 CSS is a pneumatic gradual switch designed for 100% manual adjustment of air pressure within HVAC pneumatic systems. This unit provides precise control over a 0 to 20 psig range, allowing technicians to manually select and maintain specific pressure settings for pneumatic actuators, position controlled devices, or remote set point adjusters. As a 2390 501 CSS replacement for YMC 1001, it serves as a direct drop in