Passe-Parois Fast Clutch Bulkhead Fitting - Male 1''1/4 - Female 1'' 888462 This wall crossing has a patented solution which consists in using the expansion of its joint to press the fitting against the wall, thus ensuring the tightness of the assembly. You do not therefore need to reach into the tank to screw the nut. The assembly is easily removable, simply unscrew the nut by pressing on it so that the joint... View