ADJUSTABLE BELL JOINT CLAMPS Range Stop Sizes DN 80 to 1000 Pressures PN 10 Construction - Principle When thigtening the bolts the flanges on the spigot end compresse into the socket end a gasket to stop the leaks. Special Features/Benefits Permanent repair leaks on socket end of cast iron pipe. Without interrupting the water distribution Applications Water networks Approvals - Accessories - Materials Ductile iron flanges Galvanised bolts / Sealing ring