RLS Braze-Free Fittings


  • High Pressure HVAC/R

Product Parameters

  • Continuous Operating Temperature (COT): 250°F / 121°C
  • O-Ring Temperature Rating: -40°F to +300°F -40°C to +148.9°C
  • Maximum Rated Pressure (MRP): 700 psi / 48 bar
  • Maximum Burst Pressure: 3000 psi / 207 bar+
  • Vacuum Pressure Capability: 20 Microns
  • External Leak Rate: <0.1 Ounces of Helium per Year at Operating Pressure Rang
  • Vibration Resistance: Conforms to UL109
  • Size Availability (Inches): 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1-1/8, 1-3/8

Fitting Materials

  • Fitting Body: Refrigerant Grade Copper, per ASTM-B280
  • O-Ring: HNBR

Fitting Warranty

  • 5 years.


  • Approved Oils: Mineral Oil, POE, PVE, PAG
  • Approved Tubing Materials: Copper to Copper Connections
  • Approved Copper Tubing Types for Use with the RLS Jaws: Half Hard Copper Straights - 3/8” - 1-3/8” Soft Annealed Copper Coils - 1/4” – 7/8”

The Concentric Crimping Technology is patented and unique to RLS!

RLS fittings have a unique copper grain structure

The RLS fitting(3) is made from soft annealed copper, that allows the Concentric Crimping Jaws(4) to apply even pressure with precision. The jaws perfectly mould the fitting around the copper tube(1), resulting in a repeatable and truly leak-free joint.

RLS’s jaw profile is unique

The unique RLS Concentric Crimping Jaws(4) apply perfectly even pressure all around the o-ring(2) and copper tube(1).

Approved Refrigerants

All RLS products are approved for use with the following refrigerants. Contact us about special blends or other refrigerants not listed here:

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NOTE: RLS Braze-Free Fittings are NOT approved for R22 refrigerant

Virtual Training Academy
with Simon Makin

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