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press the small center button between the terminals until it clicks
including the 100RB and 200RB series (specifically models requiring the X-27979-S configuration)
Common Questions What is the difference between the 1XL and the 100XL series
and small-scale commercial plumbing setups
Maxitrol R500S-1/2 Regulator Els PW 17895 press the small center buttonThe Maxitrol R500S 1 2 is a high performance gas appliance regulator designed for both main burner and pilot load applications. Featuring a double diaphragm balanced valve design, this regulator excel in maintaining a steady 3 6"wc outlet pressure even when subjected to widely varying inlet pressures. With a 1 2" NPT connection and a 5 PSI max inlet pressure rating (Maxitrol tested), it is an ideal choice for infrared heaters, industrial boilers, and
