Maxitrol M511B-3/4 Valve
Maxitrol M511B-3/4 3/4" NPT Modulating Gas Valve for Direct Fired (Negative Pressure) Burners with 1/2 PSI Inlet Pressure Max and both side fitted for low fire adjustment
M511B-3/4 is the direct replacement for M511-3/4 (HAS LOW FIRE ADJUSTMENT ON BOTH SIDES)
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