If you detect internal leakage (bypass) when the valve is de-energized or if the valve fails to open/close completely despite power being supplied to the coil

as well as several modular and packaged units

Built with a 3/8" bore

Can it be used with POE oil

York 026-37571-000 Gage 320788-704 If you detect internal leakageMaintain precise visual diagnostics of your chillers refrigerant circuits with the York 026 37571 000 Gage Liquid Level Sight Front. This heavy duty liquid level sight gauge is an essential OEM component for monitoring fluid levels in industrial HVAC systems, tanks, and reservoirs. Built from industrial grade transparent materials, this sight glass ensures a high transparency window into the reservoir, allowing for immediate verification of fluid