RectorSeal 87023 Pro-Fit 7/8" Quick Connect Union Coupling, Push-to-Connect Refrigerant Fitting
The 87023 is the largest fitting RectorSeal builds in the Pro-Fit Quick Connect line — a 7/8" O.D. union for the heaviest suction lines a technician is likely to splice in the field. Joining tubing this size with a torch is a slow, heat-intensive operation that demands a nitrogen purge and, in most occupied buildings, a hot work permit. The 87023 replaces it with a mechanical connection: seat 1-9/16" of clean tube in each end, confirm with a tug, and the double O-ring and grip-ring stack holds at 870 psig with a 250°F continuous temperature rating.
Is a 7/8" Union Coupling the Right Fitting for Your Lineset?
Seven-eighths tubing shows up on large multi-zone ductless systems, VRF trunk lines, and commercial split equipment — rarely anywhere else. Before you order, measure the outside diameter with calipers rather than eyeballing it against a 3/4" line; the two sizes are close enough that stripping back insulation and guessing is how the wrong fitting ends up on the truck.
The 87023 also has the deepest seat in the family at 1-9/16" per side, so budget a little over three inches of straight, round, undamaged tubing at the splice point. Nothing gets tightened: the union is push-to-connect with no nut, so once both ends are seated to the mark and pass a tug test the joint is complete. On a line this size that makes cut quality the whole job — a square end, a thorough deburr inside and out, and an unscored sealing surface.
Ideal for: VRF trunk and header lines, large multi-zone ductless suction runs, commercial split system linesets, mechanical rooms and rooftop piping where flame work is restricted, and emergency repairs on large linesets that cannot be taken out of service long enough for a brazed joint.
Working a smaller line? Drop down to the RectorSeal 87022 Pro-Fit 3/4" Quick Connect Union Coupling, or see the matched 87029 7/8" 90° elbow when the run has to turn a corner.
Fitting selection is based on measured tube outside diameter and system operating conditions. Installation must be performed by an EPA 608-certified technician in accordance with RectorSeal's published instructions and applicable mechanical codes. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Fitting | 87023 — 7/8" Pro-Fit Quick Connect Union Coupling (one fitting) |
|---|---|
| Connection Type | Push-to-Connect, Union (7/8" x 7/8") |
| Body Material | Brass |
| Seal Design | Patented Double O-Ring and Grip Ring |
| Design Pressure | 870 psig (60 bar) |
| Continuous Operating Temperature | 250°F (121°C) |
| Insertion Depth | 1-9/16" per side — deepest in the Pro-Fit range |
| Assembly | Push-to-Connect — no tools, wrench, or torque required |
| Approved Tubing | Copper and Coated Aluminum Linesets |
| Certification | ICC-ES PMG-1616 (UL 207, UL 1963) |
One fully assembled union per unit, with the seal stack and grip-ring collars factory-installed. RectorSeal cases the 7/8" union 10 per box. The correct accessory for this diameter is the 87049 Pro-Fit Support Kit for 3/4" to 7/8"; the 1/4"–5/8" kit does not cover this size. For the tubing itself, see the copper lines and fittings category.
Union Coupling & Sealing Features
87023 Maximum-Diameter Construction
- Largest Pro-Fit union built, sized for 7/8" O.D. tubing
- 1-9/16" seat depth per side, the deepest in the family
- Patented double O-ring seal on both tube entries
- Grip ring holds against the pull-out forces of a large line
- Full 870 psig design pressure at maximum diameter
- 250°F continuous operating temperature rating
- Brass body resists galling, vibration, and pulsation
- UV and corrosion resistant for exposed commercial runs
- Sight window verifies both tube ends are fully seated
- Covered by ICC-ES PMG-1616 to UL 207 and UL 1963
Commercial & VRF Line Work
- Eliminates the long heat soak a 7/8" brazed joint requires
- No nitrogen purge, brazing rod, flux, or filler needed
- No nuts, no wrench, and no torque step at any diameter
- Avoids hot work permits and fire watch on commercial jobs
- Suited to VRF trunk lines and large multi-zone suction runs
- Joins copper to copper or copper to coated aluminum
- Disconnect clips in the 87049 kit permit rework
- Shortens system downtime on emergency line repairs
- Approved for R-22, R-32, R-134a, R-290, R-410A, R-507, R-600a
- Pairs with the 87029 7/8" elbow for directional changes
Specifications & Manuals
Product documentation includes the full Pro-Fit part number table, insertion depth specifications, approved tubing and refrigerant lists, and the ICC-ES PMG product rating certificate covering the certified pressure and temperature ratings.
Frequently Asked Questions
What is the largest lineset diameter the Pro-Fit system covers?
7/8" outside diameter, and the 87023 union is that size. Above 7/8" there is no Pro-Fit equivalent, so larger tubing still requires a conventional brazed or mechanical joint.
How much insertion depth does the 87023 require?
1-9/16" per side — the deepest seat of any Pro-Fit fitting. Leave a little over three inches of straight, round, deburred tubing at the splice so both ends can bottom out in the body.
Does the 870 psi rating still apply at 7/8"?
Yes. The ICC-ES PMG-1616 certificate lists an 870 psig design pressure and a 250°F continuous operating temperature across all sizes from 1/4" through 7/8". The rating does not decrease at the larger diameters.
Which Pro-Fit support kit covers the 87023?
The 87049 kit, covering 3/4" to 7/8". The 87048 kit stops at 5/8" and its gauge and clips will not fit this fitting.
Can the 87023 replace a brazed coupling on an existing system?
It can be used to make a new joint in place of a brazed one, provided the existing tubing is copper or coated aluminum, measures 7/8" O.D., and offers enough clean, straight length to reach full insertion depth on both sides. The cut ends must be square, deburred, and free of scoring where the O-rings seat.
Is the 87023 suitable for commercial rooftop or VRF linesets?
Yes. The brass body is UV and corrosion resistant for exposed rooftop runs, and 7/8" is a common VRF trunk and large multi-zone suction size. Installation still must follow RectorSeal's instructions and the applicable mechanical code (IMC, IRC, UMC, or CMC).
Click On Links Below For Documentation:
Technical Specifications
Brochure
Product Rating Certification
