Hydrolevel 400R Low Water Cut-Off R-410A while the high-pressure side operates

while the high-pressure side operates between 100 psi and 500 psi

this thermostatic expansion valve (TXV) adjusts refrigerant flow based on real-time evaporator load

Enhanced Visual Inspection: The extra-large crystal-clear glass provides a 100% unobstructed view for confirming a solid liquid column at the metering device

Using this model for domestic hot water may lead to tank failure due to different material requirements

Hydrolevel 400R Low Water Cut-Off R-410A while the high-pressure side operatesThe Hydrolevel 400R (Part Number 45 402) is a professional grade 24VAC low water cut off designed specifically for steam boiler applications where a remote mounting configuration is required. As a primary safety control, the 400R utilizes a non cycling design, ensuring the burner circuit remains interrupted until a safe water level is restored. This model includes the EL1214 R sensing probe and a dedicated junction box, providing the flexibility