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.
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