ApplicationsRecommended for concrete placement, grout and plaster, food, dairy, pharmaceutical as well as other applications where increased flow capacity is important.UseFor use with Internal Expansion FerrulesFeaturesInternally expanded couplings are essential when maximum flow of media is important.Reduces turbulence through hoseExcellent sealing and retention characteristicsOutperforms band clampsEasy and consistent installationNoteOnly one expansion tool is needed for each ID.Safety notesDixon Holedall stems and ferrules are specifically designed to be used together as a coupling system. Due to differences in dimensions and tolerances, for safety reasons, do not use other manufacturer's stems or ferrules with Dixon Holedall products.Do not use a wrench or vice on ferruleHoledall couplings, regardless of coupling style, are never to be used for steam service at any pressure.Holedall fittings are not to be used with cable reinforced high-pressure hose, 4 or 6 braid wire hydraulic hose or any other service not listed in the recommendations.Strict adherence to ferrule OD range (Internally Expanded) for each hose end to be assembled is essential for satisfactory performance.Internally Expanded Holedall Couplings are not to be used with plastic lined chemical hose.Hose service working pressure (including surges and spikes) is never to exceed the maximum recommended working pressure for the fitting. The assembly's (hose + coupling) maximum working pressure is the lesser of the hose rated working pressure or the coupling rated working pressure.Media being transported through the hose should be compatible with the stem material. Compatibility of ferrule material with the environment in which it will be used is recommended. Consult the Compatibility Chart for material compatibility.Maximum recommended working pressures, in PSI, given at 70°F ambient temperature.