Removable line tap type Schrader valve , look for the best place to fit one on the pipe work most of these valve fit to 6mm to 8mm copper pipe. I would recommend you measure this first as if it does not fit your in a bit of a mess.
Ensure the collar is an exact tight fit to the pipe work , bent or misshaped piping can cause leakage.
Assemble the valve around the collars on the pipework and tighten the two clamping screws / bolts
Wind down with equal turns on each side to prevent damage to pipe and an equal seal all round do not over tighten as to damage or misshape the pipework.
Once in place tight enough for its purpose and your happy everything looks good you can now pierce the pipe , to do this you screw the cap on with the plunger fitted this then pushes the pipe piercing tool into pipe
Sometimes it may not be possible to fit the line tap version and you need to fit a fixed Schrader valve to the charging port on the compressor.
lokring Schrader
Before cutting the pipe prepare the surfaces as it is easier emery cloth the out side and make it clean, paint free and smooth.
Measure the pipe before cutting and ensure you have the correct sized lokring.
When you have cut the pipe work prepare the surfaces more for the joint. Apply some prep fluid to clean the surfaces. Fully insert both pipes ends into the lokring and use the lokring tool to tighten the fitting onto the pipework.
Remember R600a in flammable so this type of cold pipe working is preferred as to the older braising at high heat. But they can be very expensive especially when fitting a new compressor with all the connections and then to regas system it can work out too costly for some.
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