The Parker 75520 is a heavy-duty Normally Closed (N/C) solenoid coil engineered for high-reliability fluid control in industrial HVACR and plumbing systems
30 mm orifice provides the exact restriction required for LP gas densities
Automatic Reset Logic: Eliminates unnecessary service callbacks by re-closing the circuit once the plenum cools
the EF19ZG006 ensures a precision-fit plug assembly designed to withstand the vibration and thermal cycling common in residential air handlers and packaged units
No Moving Parts: The electronic probe technology eliminates the mechanical failure points associated with traditional float-style cut-offs
EWC Controls NCM-3ZL Control Panel 326070-701 The Parker 75520 is aThe EWC Controls NCM 3ZL Zone Control Panel is a high performance, non expandable HVAC zoning system designed to manage 2 or 3 independent zones in residential and light commercial applications. Serving as the direct engineered replacement for the NCM 300L, this panel provides a seamless retrofit HVAC control solution. It supports 2 Heat 1 Cool configurations across gas, electric, oil, and heat pump systems. The NCM 3ZL features an intuitive LCD
