Plaza notes
Hard ruleDescription
the 421-340 provides the stable high-voltage output required to maintain combustion efficiency in legacy and modern oil burner systems
Using this valve with LP requires a specific conversion kit or a dedicated LP valve to prevent hazardous over-firing
making it a rugged
OEM Precision Fit: The standard 48Y frame and 1/2" x 6" shaft ensure direct compatibility without the need for mounting modifications
Automatic Reset Functionality: Restores circuit continuity once the system cools to safe operating levels without manual intervention
Parker 100912 Regulator Els PW 29614 the 421-340 provides the stableThe Parker 100912 is a professional grade A9 Hot Gas Bypass Regulator engineered to maintain stable evaporator pressures in commercial refrigeration and air conditioning systems. This internally equalized regulator features a 5 8" ODF (OD Sweat) connection and a 5 8" port, calibrated for a precise adjustment range of 10" Hg vacuum to 120 psig (Range A). By modulating refrigerant flow, the Parker Flo Con A9 prevents compressor short cycling and ensures
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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