Rothenberger Rofrost Rapid Pipe Freezing Kit - 15 & 22mm 64030

Actually read the instructions, works well, if liquid is coming out stop spraying or reduce amount of spray, it’s there in black and white in the instructions

Do not buy this kit. The gas wastes out from the valve. It will not / does not go through the straw (into the clamp) but virtually all of it leaks out and completely wastes from the valve on the top of the cannister. Both cannisters the same problem. The press valve is a very poor design. The valve does not seal at all either onto the ejection stem nor to the exit on the valve ring where the straw attaches. The liquid simply gushes out to atmosphere. This is a total waste of money.

I've got one of these not purchased from Amazon but the other person who gave it one star can't have read or followed the instructions properly.The system works but yes the straws are a bit fiddly to get in the holes on the clamps.Of course some comes out of the vent it freezes by evaporating so needs to vent