Approved Refrigerants

All RLS Refrigerant Press Fittings are approved for use with refrigerants below. Contact us about s pecial blends or other refrigerants not listed here. Check your local codes to ensure that RLS fittings are suitable for use with your particular refrigerant.

R-134AR-404AR-407AR-407C
R-407FR-407HR-410AR-417A
R-421AR-422BR-422DR424A
R-427AR-434AR-437AR-438A
R-448AR-449AR-450AR-452A
R-453AR-456AR-507AR-513A
R-513BR-718Ethylene Glycol

RLS fittings are also compatible with the following industrial (non-refrigerant) gasses: nitrogen, argon, helium and oxygen (non-medical).