Connection Learn more about our ranges of standard or safety quick fittings for compressed air and other fluids: breathing air, cooling circuits, water, hydraulics, welding, quick-release fitting Refine search Sort results by fluid COMPRESSED AIR BREATHABLE AIR WATER INERT GASES AND FLUIDS OIL Optional Protective Cap Optional Protective Cap Long-profile parallel male thread adaptor Long-profile parallel female thread coupler Long-profile parallel male thread coupler Hoses with swaged ferrules Hoses with couplers and adaptors