Straight Union
Joins two tubes of the same diameter in line.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø9Ø10Ø12Ø16
Reducing Straight Union
Joins two tubes of different diameters in line.Tube Ø (mm): large → small6→48→48→610→610→812→612→812→1016→12
Union Elbow
Joins two tubes at 90°.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12Ø16
Union Tee
Connects three tubes of the same diameter in a T.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø9Ø10Ø12Ø16
Reducing Union Tee
Branches a smaller tube off the main line.Tube Ø (mm): large → small6→48→48→610→610→812→612→812→10
Union Y
Splits one line into two of the same diameter.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12Ø16
Reducing Union Y
Splits one line into two smaller lines.Tube Ø (mm): large → small6→48→48→610→610→812→612→812→10
Union Cross
Connects four tubes in a cross.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12
Manifold Connector
Distributes air from one line to several tubes.Tube outer diameter Ø (mm)Ø4Ø6Ø8
Bulkhead Union
Passes a tube line through a panel or enclosure wall.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12
Plug-in Reducer
Its stem plugs into a fitting to step down the tube size.Tube Ø (mm): large → small6→48→48→610→610→812→612→812→10
Inline Flow Control Valve
Adjustable flow control fitted inline between two tubes.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12
Blanking Plug
Seals unused push-in ports.Tube outer diameter Ø (mm)Ø4Ø6Ø8Ø10Ø12