RectorSeal 87043 Pro-Fit 3/8" Quick Connect Service Valve, Push-to-Connect Refrigerant Fitting
The 87043 is the 3/8" service valve in the Pro-Fit range — the size that matches the most common ductless equipment connection, which makes it the one most likely to be specified into a build or fitted as a replacement. The valve brazes into the unit's circuit through a copper stub, bolts to the cabinet through a two-hole flange, and presents a capped service port and a capped operating stem. The lineset side is what makes it a Pro-Fit part: a 3/8" push-to-connect port that takes 1-1/4" of bare copper, with no flare to cut and no nut to torque.
Is a 3/8" Service Valve the Right Part for This Job?
Two things determine whether this is the correct part rather than a socket. First, the equipment side is a plain copper stub that must be brazed — so this valve gets installed at the machine, not dropped into a lineset run. Second, RectorSeal supplies the service valves on an OEM basis, which puts them in a different category from the five general-line fittings. If the goal is simply to land a lineset on an existing flare port, the 87037 socket does that job without any brazing at all.
Where the 87043 does apply, the installer's side of the work is short. The lineset goes into the push port at 1-1/4" of insertion: cut square, deburr inside and out, mark with the depth gauge, push until the grip ring clamps, and pull firmly to confirm. Nothing on that port is torqued. Gauges go on the capped service port; the stem cap stays on until the system is being worked.
Ideal for: OEM equipment specifying push-to-connect lineset connections at 3/8", replacing a leaking or damaged factory service valve on a ductless condenser, and designs where removing field flares from the equipment connection is a deliberate choice made up front.
Different size? The valves run from the 87042 1/4" up to the 87044 1/2" and 5/8".
Confirm the valve's connection type, mounting pattern, and application against RectorSeal's documentation and the equipment manufacturer's requirements before specifying. 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 | 87043 — 3/8" Pro-Fit Quick Connect Service Valve (one valve) |
|---|---|
| Lineset Connection | 3/8" Pro-Fit Push-to-Connect Port |
| Equipment Connection | Copper Tube Stub (brazed) |
| Additional Ports | Capped Service / Access Port and Capped Operating Stem |
| Mounting | Two-Hole Brass Mounting Flange |
| Body Material | Brass |
| Design Pressure | 870 psig (60 bar) |
| Continuous Operating Temperature | 250°F (121°C) |
| Insertion Depth | 1-1/4" on the push-to-connect port |
| Certification | ICC-ES PMG-1616 (UL 207, UL 1963) |
One assembled valve per unit, push-end seal stack factory-installed and both caps fitted, cased 5 per box. The 3/8" push port falls inside the coverage of the 87048 Pro-Fit Support Kit for depth marking and disconnection. Brazing supplies for the equipment stub are under refrigerants, gases and line flush.
Service Valve & Sealing Features
87043 Valve Body
- Brass body sized for a 3/8" lineset connection
- Integral two-hole flange for cabinet mounting
- Copper stub on the equipment side for brazing in
- 3/8" Pro-Fit push-to-connect port on the lineset side
- Patented double O-ring and grip ring on the push port
- Capped service / access port for gauge connection
- Capped operating stem
- 870 psig design pressure
- 250°F continuous operating temperature rating
- Covered by ICC-ES PMG-1616 to UL 207 and UL 1963
Ductless Equipment Application
- Matches the most common ductless connection diameter
- Removes the field flare from the equipment connection
- 1-1/4" insertion on the push port, no torque required
- Supplied by RectorSeal on an OEM basis
- Replaces a leaking or damaged factory service valve
- Accepts copper or coated aluminum linesets
- Sight window verifies lineset insertion
- System must be isolated or pumped down before disconnecting
- Approved for R-22, R-32, R-134a, R-290, R-410A, R-507, R-600a
- Cased 5 per box
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. Confirm valve-specific application details with RectorSeal before specifying.
Frequently Asked Questions
Which side of the 87043 connects to the lineset?
The push-to-connect port, identifiable by its release collar and sight window. The opposite end is a plain copper stub for brazing into the equipment — no tubing pushes into that side.
Does the 87043 need to be brazed?
The equipment side does. The copper stub is brazed into the unit's refrigerant circuit, which is why this is an equipment-mounted part rather than something that drops into a cut lineset. The lineset side needs no heat at all.
What insertion depth does the 3/8" valve's push port use?
1-1/4", the same figure as every other 3/8" Pro-Fit fitting. Mark it with the depth gauge from the 87048 kit and confirm through the sight window.
Can I put gauges on the 87043?
The body carries a capped service / access port on a short angled boss, which is the standard location for a gauge connection on this type of valve. RectorSeal does not publish the port's thread specification — confirm it with RectorSeal before assuming a particular hose fitting will thread on.
Is the 87043 torqued anywhere?
Not on the push-to-connect port, which has no nut. The torque values in RectorSeal's data sheet correspond to SAE 45° flare nuts, which this valve does not have — its equipment side is brazed and its lineset side is push-fit.
What refrigerants is the 87043 rated for?
The ICC-ES PMG-1616 certificate lists R-22, R-32, R-134a, R-290, R-410A, R-507, and R-600a at 870 psig and 250°F continuous. RectorSeal's broader Pro-Fit literature also references R-404A, R-407A, R-407C, R-452B and R-454B.
Click On Links Below For Documentation:
Technical Specifications
Brochure
Product Rating Certification
