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> Honeywell C645E1002 oil pressure switch C645E
Honeywell C645E1002 oil pressure switch C645E
for use with distillate fuel oil
The C645E1002 Distillate Fuel Oil Pressure Switch is the same as the C645A1006 Gas Pressure Switch except that it does not have a 0.015 in. (0.38 mm) diameter (nominal)orifice in its 1/4 in. NPT main (high pressure) connection. (This orifice is required in a C645A Gas Pressure Switch to restrict gas leakage, but it is too small for oil applications.) The C645E1002 has a 0.125 in. (3.18 mm) diameter (nominal) opening in its 1/4 in. NPT main connection into its pressure chamber.
