McDonnell & Miller 51-S Feeder Refrigerant What is the difference between

What is the difference between EBFV and SBFV models

enabling technicians to mount the head after the valve body is piped in

Natural Gas or 10" w

Designed for rugged field use with a focus on long-term switching reliability in varying ambient conditions

If the switch detects insufficient vacuum or a blocked vent

McDonnell & Miller 51-S Feeder Refrigerant What is the difference betweenThe McDonnell & Miller 51 S (Part Number 135600) is a heavy duty mechanical water feeder designed specifically for high capacity steam and hot water boilers. Engineered for systems with a maximum vessel pressure of 35 PSI and a maximum water supply pressure of 100 PSI, this unit provides a reliable proportional feed action to maintain optimal water levels without the hunting common in electronic setups. It features 1" NPT connections for high flow