this Maxitrol gas filter kit is rated for Gas Families 1

It must be paired with an Erie PopTop actuator (AG or AH series) to function as a complete zone control valve

and R-404A refrigerants

Efficient Installation: Exclusive Erie PopTop design enables one-handed actuator removal and attachment without tools

Verify the 100208387 is receiving the correct 1

McDonnell & Miller 53-2 Water Feeder 30067439-890 this Maxitrol gas filter kitThe 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,