Featuring a 0/2-10 VDC modulating control signal

An open reading indicates a failed internal heater

Why did my original rectifier board fail

crumbling edges

Parker 73218BN4UNLVN0C111 Valve R-410A Featuring a 0/2-10 VDC modulatingThe Parker 73218BN4UNLVN0C111 is a high performance 2 way normally closed solenoid valve designed for rugged industrial fluid control and HVACR applications. Engineered with a durable brass body and 1 2" NPT ports, this pilot operated valve utilizes a 24VDC coil to manage the flow of compatible liquids and gases. With a minimum operating pressure differential of 5 PSI and a maximum rating up to 175 PSI, it ensures reliable shut off and consistent