Instructions for John Guest and DMfit quick connection fittings



“How to make a connection, the tube is simply pushed in by hand using the collar locking system then holds the tube firmly in place without deforming it or restricting flow.  

Cut tube square Cut the tube square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be removed before inserting into fitting.   Fitting grips before it seals. Ensure tube is pushed in to the tube stop.  

Push up to tube stop Push the tube into the fitting, to the tube stop. The collet (gripper) has stainless steel teeth which hold the tube firmly in position while the O-ring provides a permanent leak proof seal.  

Pull to check secure Pull on the tube to check it is secure. It is good practice to test the system prior to leaving site and/or before use.  

How to disconnect Push in collet and remove tube To disconnect, ensure the system is depressurized before removing fitting. Push in collet squarely against face of fitting. With the collet held in this position, the tube can be removed. The fitting can then be re-used.   


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