Pay in 4 interest-free payments of $63.08 Learn more
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
the 421-340 provides the stable high-voltage output required to maintain combustion efficiency in legacy and modern oil burner systems
For a complete system overhaul
Using this valve with LP requires a specific conversion kit or a dedicated LP valve to prevent hazardous over-firing
Key Benefits: Direct OEM Fit: Drop-in replacement for Daikin-McQuay 049121701 and 1B455
Automatic Reset Functionality: Restores circuit continuity once the system cools to safe operating levels without manual intervention
Parker 100912 Regulator Els PW 29614 the 421-340 provides the stableThe Parker 100912 is a professional grade A9 Hot Gas Bypass Regulator engineered to maintain stable evaporator pressures in commercial refrigeration and air conditioning systems. This internally equalized regulator features a 5 8" ODF (OD Sweat) connection and a 5 8" port, calibrated for a precise adjustment range of 10" Hg vacuum to 120 psig (Range A). By modulating refrigerant flow, the Parker Flo Con A9 prevents compressor short cycling and ensures
US$ 54.95
US$ 99.95
US$ 64.95