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The RECTORSEAL m72003 is a universal thermostatic expansion valve (TXV) designed for residential and light commercial refrigeration and air conditioning systems rated from 3.5 to 5 tons. TXV valves regulate refrigerant flow into the evaporator coil, maintaining proper superheat and protecting the compressor from liquid slugging. The m72003 is a universal-fit replacement intended for service technicians performing field retrofits or OEM replacements where the original valve has failed or is no longer available. Its universal design reduces the need to stock multiple SKUs for varying system capacities within this tonnage range.
This valve is suited for split-system air conditioners and heat pumps in the 3.5 to 5 ton capacity range, commonly found in residential and small commercial installations. HVAC technicians typically install this valve during evaporator coil replacements, refrigerant system overhauls, or when diagnosing low superheat or flood-back conditions. It is appropriate for systems using common refrigerants compatible with TXV technology in this capacity class.
Designed as a universal TXV replacement for residential and light commercial split-system air conditioners and heat pumps in the 3.5 to 5 ton capacity range.
Installation must be performed by a licensed HVAC technician holding the appropriate EPA Section 608 certification for refrigerant handling. The system must be fully recovered and depressurized before valve removal or installation. Braze connections should be made using nitrogen purge to prevent oxidation inside the refrigerant circuit. After installation, leak-test the system and verify superheat readings before returning the equipment to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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