I have had no problems with the E6H86 gas valve on my 37 year old boiler. I have replaced the White Rodgers 5059-23 Pilot Relite Control and leaded electrode. I want to have on hand a spare mercury switch module that plugs into the gas valve. I just don't know what part number is applicable. The original mercury switch is #5098 without subtype. The switches available are 5098-20, 5098-134, 5098-156. Does anyone know which switch is compatible with my gas valve?
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