Mueller
Mueller A 04585 Half Union Brass 700 psi HVAC control
A brass half-union fitting connects 1/4 inch flare to 1/4 inch NPTF at 700 psi for refrigeration systems
- Half-union brass fitting rated 700 psi for high-pressure HVAC reliability
- 1/4 inch flare to NPTFE connection simplifies refrigeration line assembly
- Mueller Industries manufacturing ensures consistent material quality and thread precision
- New condition guarantees clean, undamaged threads for leak-free installation
- Unrestricted sale across all states allows immediate project deployment
Brass Half Union for 700 psi Systems
This Mueller Industries A 04585 fitting connects a 1/4 inch flare to a 1/4 inch NPT female thread. It is built from brass for corrosion resistance in refrigeration and HVAC lines. The component suits technicians assembling or servicing high-pressure piping. It handles a maximum working pressure of 700 psi.
Verify Thread and Flare Compatibility
Confirm that your existing tubing uses a 1/4 inch flare end and that the mating port accepts a 1/4 inch NPT female connection. Brass construction requires proper sealing technique to prevent leaks at rated pressure. Ensure the system design accommodates the fitting's pressure class before installation. The item ships directly from the distributor.
Brass Holds Shape Under Continuous Pressure
Brass resists creep and stress relaxation when subjected to sustained 700 psi loads over long service intervals. The material maintains sealing integrity through thermal cycles common in refrigeration circuits. No plastic deformation is expected within the rated pressure range. The fitting remains dimensionally stable during extended operation.
Highlights
- Half-union brass fitting rated 700 psi for high-pressure HVAC reliability
- 1/4 inch flare to NPTFE connection simplifies refrigeration line assembly
- Mueller Industries manufacturing ensures consistent material quality and thread precision
- New condition guarantees clean, undamaged threads for leak-free installation
- Unrestricted sale across all states allows immediate project deployment
Specifications
| Brand | MUELLER |
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Questions about this item
What comes in the box with the Mueller A 04585 half union and what else is needed to make the connection?
The package contains the brass half union fitting with 1/4 inch flare and 1/4 inch NPT threads. You must supply compatible flare nuts, copper tubing and thread sealant for the NPT side.
How do I choose between the available versions of this Mueller half union?
This item is a single 1/4 by 1/4 inch brass half union rated for 700 psi. No other sizes or materials are offered under this part number.
What does the 700 psi rating mean once the fitting is installed in a refrigeration line?
The 700 psi rating is the maximum working pressure the brass half union can safely contain when properly assembled with flare and NPT connections.
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