RectorSeal 87028 Pro-Fit 3/4" Quick Connect 90° Elbow, Push-to-Connect Refrigerant Fitting
Three-quarter-inch tubing belongs to multi-zone ductless, VRF branch piping, and light commercial splits, and at that diameter a field-made bend is effectively out of the question without a machine. Brazing a 3/4" ell is the alternative, and it means a long heat soak with nitrogen flowing the entire time, in buildings that usually require a hot work permit for the privilege. The RectorSeal 87028 turns the corner cold: two push-to-connect ports, 1-1/2" of tube seated in each, nothing to tighten, rated to 870 psig and 250°F continuous.
Is a 3/4" 90° Elbow the Right Fitting for This Turn?
Confirm the diameter with calipers before ordering. Three-quarter and seven-eighths tubing are close enough by eye that stripping insulation and guessing is how the wrong elbow ends up at the top of a ladder. And note the kit boundary: 3/4" is the first size that falls outside the small support kit, so if this is your first fitting above 5/8" you will need the 87049 support kit to mark the depth and to release the fitting later.
Each leg takes 1-1/2" of insertion, so allow close to two inches of clean straight tube on each approach. Neither leg is tightened — the fitting has no nuts — which puts the whole joint on cut quality and insertion depth. Support the tubing on both sides: a 3/4" line has real mass, and the elbow should be making the turn, not carrying the run.
Ideal for: Multi-zone ductless and VRF branch line direction changes, light commercial split suction runs, rooftop and mechanical room piping where flame work is restricted, tenant-occupied retrofits, and repairs on large linesets that cannot afford the downtime of a brazed corner.
Largest elbow made? That is the RectorSeal 87029 Pro-Fit 7/8" Quick Connect 90° Elbow. To splice 3/4" tube in a straight run, use the 87022 union coupling.
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 | 87028 — 3/4" Pro-Fit Quick Connect 90° Elbow (one fitting) |
|---|---|
| Connection Type | Push-to-Connect, Fixed 90° Elbow (3/4" x 3/4") |
| 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 | 1-1/2" per leg |
| 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 assembled elbow per unit with the seal stack and grip-ring collars factory-installed, cased 10 per box. This size requires the 87049 Pro-Fit Support Kit (3/4"–7/8"), whose combined disconnect and marking tools are sized for the large fittings. Large-diameter tubing is under copper lines and fittings.
90° Elbow & Sealing Features
87028 Large-Diameter Elbow
- Fixed 90° brass body for 3/4" O.D. tubing
- 1-1/2" seat per leg, second deepest in the range
- Full-size machined bore through the turn
- Patented double O-ring seal at both ports
- Grip ring anchors a heavy large-diameter line
- 870 psig design pressure at the larger diameter
- 250°F continuous operating temperature rating
- UV and corrosion resistant for rooftop exposure
- Sight windows confirm seating on both legs
- Listed on ICC-ES PMG-1616 to UL 207 and UL 1963
Multi-Zone & Commercial Routing
- Replaces a radius that cannot be bent by hand at 3/4"
- Avoids the long heat soak of a brazed 3/4" ell
- No nitrogen purge, brazing rod, flux, or filler
- No nuts, no wrench, and no torque on either leg
- Removes hot work permits and fire watch requirements
- First size requiring the 87049 large support kit
- Joins copper to copper or copper to coated aluminum
- Releasable with the 87049 disconnect tool after pump-down
- Approved for R-22, R-32, R-134a, R-290, R-410A, R-507, R-600a
- Packed 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
Where does 3/4" tubing normally appear on a system?
As the suction line on multi-zone ductless systems, VRF branch piping, and light commercial splits. It is uncommon on single-head residential equipment — measure the outside diameter before ordering rather than assuming.
How much tube does each leg of the 87028 need?
1-1/2" of insertion per leg, so allow close to two inches of clean, straight, deburred tubing on each approach to the fitting.
Does the 87028 work with the 87048 support kit?
No. The 87048 kit stops at 5/8". The 3/4" elbow needs the 87049 kit, whose combined disconnect and line-marking tools are sized for 3/4" and 7/8".
Why not just bend 3/4" tubing instead?
At this diameter a clean bend needs a proper bender and a wide radius, which is why runs this size are normally built from straight lengths and fittings. Attempting it by hand collapses the tube.
How much time does the 87028 save over a brazed elbow?
The comparison is not just minutes at the joint — a brazed 3/4" ell also means setting up nitrogen flow, and in most occupied buildings a hot work permit and a fire watch. The Pro-Fit connection removes all of that setup, not only the heat.
Does the 87028 need to be secured after installation?
Support the tubing on both approaches with standard hangers or straps at code-required intervals, so the elbow is making the turn rather than carrying the weight of an unsecured run.
Click On Links Below For Documentation:
Technical Specifications
Brochure
Product Rating Certification
