R12 to 134a Low Side Thread Down Coupler #3055
- Thread down couplers are used for hard-to-reach schrader valves
- These couplers are for use with R12 hoses.
Instructions:
Turn knob counterclockwise to raise depressor valve. (This makes it easier to install on lowside port)
After coupler has been installed, turn knob clockwise to insert product and read pressure.
Domestic Store - 