Features:
Universal retrofit valve:
Application: suitable for 7/16 inch low side port. Fits all vehicles pre-1994. Compatible with R-134a refill fittings.
Function: Converts from R-12 to R-134A air conditioning system. This valve can be screwed on top of a closed AC system that just needs a little refrigerant or top off.
BPV-31 bullet piercing tap valve:
Replace part No.: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. Compatible with 1/4 inch, 5/16 inch, 3/8 inch outside diameter pipes.
Easy to install: Cleaning off the copper pipe with a wire brush or abrasive cloth. Then attach it to the smoothest part of the copper tube to ensure tight sealing.
Specifications:
Color: as pictures shown
Material: Metal
Package includes:
1* Universal retrofit valve (with a dust cap)
1* BPV-31 bullet piercing tap valve
Warm notes:
It is not suitable for refrigerant 410a.
Put on your safety glasses and protective gloves before piercing the pipe.

