Ranco A22-391 Control 30067439-890 Mandatory for high-duty valve linkage

Mandatory for high-duty valve linkage applications including Q100 and Q601 series installations

facilitating a clean and professional installation on various compressor housings

Factory-Calibrated Precision: Fixed 30 PSI Open and 60 PSI Close settings remove the guesswork from field setup and prevent tampering

Always consult the specific boiler's Rating Plate or Service Manual to determine the correct quantity for the full assembly

maintaining the 254nm germicidal output is essential for neutralizing airborne pathogens and preventing biofilm accumulation on the evaporator coil

Ranco A22-391 Control 30067439-890 Mandatory for high-duty valve linkageThe Ranco A22 391 Constant Differential Control is a specialized temperature control switch engineered for high demand commercial refrigeration and freezer applications. This SPDT (Single Pole Double Throw) control is designed without an "off" position, ensuring continuous monitoring and regulation for HVACR refrigeration temperature control. With a constant differential of 8. 0F, it maintains tight thermal tolerances across its operating range. The