Storz Couplings/Drafting Issues
I have recently had some opportunities to work with suction hose that has 5" storz fittings. Many of the adapters that are used with this hose have flat faced (pressure) gaskets, but the actual couplings on the sleeves have raised bead drafting gaskets. We were having issues with air leaks using a flat faced gasket adapter with a raised bead suction sleeve coupling. Having little experience with these, its my assumption that all the gaskets used for drafting with storz couplings must be raised bead? Am I correct to assume this? Also, the air leak was from behind the stors coupling of the suction hose, where the swivel rotates on the metal sleeve....there was a little play in it. I figured this was because the adapter didn't have a raised bead gasket and wasn't pushing the coupling as tight as it could have been.
With the switch to all reiaed bead gaskets, its obviously going to cause the use of any adapters with LDH hose to be tighter too, right? These suction hoses are also 6" with 5" storz couplings.
Anyone have any feedback on this issue as well as the use of storz couplings on hard sleeves?