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Pneumatic Fittings, Push in Fittings -- PU Union Straight

Union straight is a kind of generally used pneumatic fittings and push in fittings. Union straight connects two tubings of equal ΦD in line. Accommodates metric tubing O.D ranging from 4mm to 16mm, inch tubing O.D ranging from 1/8" to 1/2".

Union Straight, Pneumatic Fittings, Push in Fittings Drawing of union straight

Metric Tube ØD
4mm 5mm 6mm 7mm 8mm 9mm 10mm 12mm 14mm 15mm 16mm
Inch Tube ØD
1/8" 5/32" 3/16" 1/4" 5/16" 3/8" 1/2"

Metric Tube (mm)
Part No. Tube ΦD
PU 04 4mm
PU 05 5mm
PU 06 6mm
PU 07 7mm
PU 08 8mm
PU 09 9mm
PU 10 10mm
PU 12 12mm
PU 14 14mm
PU 15 15mm
PU 16 16mm

Inch Tube (inch)
Part No. Tube ΦD
PU 1/8 1/8"
PU 5/32 5/32"
PU 3/16 3/16"
PU 1/4 1/4"
PU 5/16 5/16"
PU 3/8 3/8"
PU 1/2 1/2"



Polyurethane Tubing

Nylon Tubing

Polyethylene Tubing

Polyether Tubing

Plastic Tubing

Pneumatic Tubing

Pneumatic Valves

Inline Speed Control

Flow Controls

Composite Right Angle Flow Control

Mini Ball Valve

Check Valve

Stop Valve

Pneumatic Accessories

Sintered Bronze Muffler

Plastic Silencers

Air Blow Guns

Tube Cutters

Threaded Brass Fittings

Standard Pipe Fittings