and R-404A refrigerants

this Maxitrol gas filter kit is rated for Gas Families 1

Its low pressure switch logic provides precise refrigeration pressure regulation

What are the symptoms of a failing 940-C411-80 relay

McDonnell & Miller 53-2 Water Feeder 30067439-890 and R-404A refrigerantsThe McDonnell & Miller 53 2 (Part Number 137100) is a dual function mechanical water feeder and low water cut off designed for heavy duty service in low pressure steam and hot water boiler applications. Engineered for systems with a maximum vessel pressure of 75 PSI, this unit features 1 inch NPT connections and a high capacity feed mechanism. The snap acting SPDT switch provides precise electrical control for burner circuits and alarm signaling,