Yes, but also drain the hose. The liquid does not always all blow out through the torch. In fact, sometimes torches get clogged up and don't work reliably.
Just a guess, but when you are using the torch and gas is flowing, the liquid gets deposited along the length of the hose, but when the torch is left idle for a while, then the liquid can run to the lowest point and form a pool. Then when the torch is used again, it all blows out at once. Again, this is not a verified fact, but a guess of what might be happening.
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