RectorSeal 87020 Pro-Fit 1/2" Quick Connect Union Coupling, Push-to-Connect Refrigerant Fitting
The RectorSeal 87020 handles the 1/2" O.D. suction line found on larger single-zone mini splits, multi-zone indoor branches, and light commercial split equipment. It is a straight push-to-connect union — no nuts, no wrench, no torque value to hit. Cut the line square, de-burr it, mark 1-1/4" on each end, push until the stainless grip ring clamps, and tug to confirm. The patented double O-ring stack does the sealing, holding at 870 psig with a 250°F continuous operating rating, on a diameter that would otherwise mean a long braze and a nitrogen purge.
Is a 1/2" Union Coupling the Right Fitting for Your Lineset?
Half-inch tubing is a suction line in almost every application it appears in, paired with a 1/4" liquid line on many 12,000–24,000 BTU ductless systems. Because it is a suction line, it runs cold and it sweats: check that the section you plan to splice is not pitted or corroded where the O-rings will seat, since surface damage under insulation is easy to miss until the joint is already made.
The 87020 seats 1-1/4" per side, the same depth as the 3/8" union. Because there is no nut and no tightening step, the whole joint rests on two things: full insertion, and a clean tube end. Pull the insulation back far enough to cut square and deburr properly, confirm the tube is home through the sight window, tug-test each side, then re-seal the insulation over the finished joint to control condensation on a cold suction line.
Ideal for: Suction line repairs on 12k–24k BTU ductless systems, multi-zone indoor branch runs, light commercial split linesets, lineset extensions during condenser relocations, and splices inside walls, soffits, and ceiling cavities where flame work is not permitted.
Need a larger suction line? Step up to the RectorSeal 87021 Pro-Fit 5/8" Quick Connect Union Coupling, or use the 87026 1/2" 90° elbow where the line has to change direction.
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 | 87020 — 1/2" Pro-Fit Quick Connect Union Coupling (one fitting) |
|---|---|
| Connection Type | Push-to-Connect, Union (1/2" x 1/2") |
| 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 | 1-1/4" per side |
| 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) |
Shipped as one assembled union, seal stack and grip-ring collars factory-installed, cased 10 per box by RectorSeal. The 1/2" size falls inside the coverage of the 87048 Pro-Fit Support Kit (1/4"–5/8"), which provides the insertion depth gauge and the disconnect clips. For installation consumables and insulation, see Installation Supplies.
Union Coupling & Sealing Features
87020 Body & Seal Design
- Brass union body sized for 1/2" O.D. refrigerant tubing
- Stainless grip ring clamps on insertion, with no external clamping load
- Patented double O-ring seal on both tube entries
- Holds against movement on a cold, working suction line
- 870 psig design pressure rating
- 250°F continuous operating temperature rating
- Resists galling from vibration and pressure pulsation
- UV and corrosion resistant brass construction
- Sight window verifies insertion on each side
- Certified under ICC-ES PMG-1616 to UL 207 and UL 1963
Suction Line Installation
- 1-1/4" insertion depth per side, marked with the Pro-Fit gauge
- Flame-free assembly with no flux, filler, or brazing gas
- No nitrogen purge required during the connection
- No nuts and no tightening step to get wrong
- Common suction size on 12k to 24k BTU ductless systems
- Joins copper to copper or copper to coated aluminum linesets
- Quick-release removal using the 87048 kit disconnect clip
- Suitable for wall, soffit, and ceiling cavity splices
- Approved for R-22, R-32, R-134a, R-290, R-410A, R-507, R-600a
- Packaged 10 per manufacturer case
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 suction line sizes does the 87020 serve?
It is a union for 1/2" O.D. tubing on both ends, most often the suction line on 12,000 to 24,000 BTU ductless systems, multi-zone indoor branches, and light commercial split equipment.
Is there a tightening or torque step on the 87020?
No. The Pro-Fit union is push-to-connect with no nuts. RectorSeal's published procedure ends at "gently pull on the tube to ensure proper seating." The torque table on the Pro-Fit data sheet covers the flare-nut fittings — sockets and service valves — not unions.
Does the 87020 need a special tool to install?
No specialty tool is required — a tubing cutter and a deburring tool cover it. The Pro-Fit depth gauge in the 87048 support kit is what marks the 1-1/4" insertion line accurately.
What is the maximum operating pressure of the 87020?
The ICC-ES PMG-1616 certificate lists an 870 psig design pressure with a maximum abnormal pressure of 870 psi, applied uniformly across all Pro-Fit sizes from 1/4" through 7/8".
Can the 87020 be installed inside a wall or ceiling cavity?
Its flame-free assembly makes concealed splices practical where a torch would not be allowed. Concealed joints must still comply with the access and inspection requirements of the governing mechanical code (IMC, IRC, UMC, or CMC) in your jurisdiction — confirm with the AHJ before closing up the cavity.
Is the 87020 rated for high-temperature discharge lines?
The fitting carries a 250°F (121°C) continuous operating temperature rating. Any application must stay inside that limit and inside the 870 psig design pressure; verify the actual operating conditions of the line before selecting the fitting.
Click On Links Below For Documentation:
Technical Specifications
Brochure
Product Rating Certification
