

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The SOURCE 1 3591-00 is an OEM solenoid valve designed for heat pump refrigerant circuit control. This valve regulates refrigerant flow within the system and is supplied without a coil, meaning the coil must be sourced or reused separately during installation. The 7/8 inch ODF connection accommodates standard copper refrigerant line sets common in residential and light commercial heat pump systems. Licensed HVAC technicians install this valve as a direct OEM-style replacement when the existing valve body has failed or is leaking. Its OEM origin ensures dimensional and functional accuracy to the original equipment specification.
This solenoid valve is suited for heat pump refrigerant systems where the ME19S270-HP valve configuration is specified. The less-coil design is appropriate for applications where the existing electrical coil is functional and only the valve body requires replacement, reducing parts cost and simplifying the swap. It is installed inline in the refrigerant circuit and is typically found in split-system heat pump equipment serviced by certified HVAC technicians working on refrigerant-side components.
Designed as an OEM-style replacement solenoid valve body for heat pump refrigerant systems specifying the ME19S270-HP configuration with a 7/8 inch ODF connection.
This valve must be installed by an EPA Section 608 certified HVAC technician, as work involves opening a refrigerant circuit. The system must be properly recovered and depressurized before removing the existing valve body. Braze connections should be made using nitrogen purge to prevent internal oxidation scaling. Verify coil voltage and compatibility before reconnecting the electrical coil to the replacement valve body.
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.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!