Yes you can disconect the bayonet coupling to move the cooker out of the way as long as it is a push and twist to relase coupling it will seal itself this is ok for short term work but should not be left like this permanently, to connect a new cooker you will need to remove the hose from the original cooker and you will then need a sealant like rocol paste to put on the threads before fitting it to the new cooker then a drop test should be done to prove you havent got a leak anywhere
steve
March 2005