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How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Aluminum Quick-Connect Pipe Fittings for Compressed Air

Twist these fittings onto aluminum pipe for quick, sealed connections—no threading, soldering, or welding necessary. Use them to build a compressed air system in half the time it would take to build a copper or steel system. Also known as Unipipe fittings, they’re part of a quick-connect system that’s compatible with pipe from Unipipe, Transair, and Infinity.

Finger tighten the collar on the end of these fittings, then use a wrench for the final quarter turn. The inside of these fittings has a compression ring and O-ring to seal against the pipe. They’re easy to take apart as needed to modify your setup.

Choose fittings with a blue or gray collar for easy identification. Fittings with a blue collar are often used for compressed air systems. Fittings with a gray collar are often used for vacuum systems.

Straight Connectors, Female Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Connectors have quick-connect collars on both ends. Use them to connect two lengths of pipe.

Blue Collar
For Pipe OD	Socket Dp., mm	Lg., mm	Material	Color	Max. Pressure		Each
3/4" (20 mm)	35	70	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	75	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	117	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
3/4" (20 mm)	35	70	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	75	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	117	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000

Straight Adapters, Female Quick Connect × Male Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

These adapters have pipe threads on one end to connect to your compressor or other component.

Threaded connections can be taken apart as needed for maintenance and repair.

Blue Collar
For Pipe OD (A)	Pipe Size (B)	Socket Dp., mm	Lg., mm	Material	Color	Max. Pressure		Each
NPT Threads
3/4" (20 mm)	3/4	35	51.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	1	37	60.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	1 1/2	57	81	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
NPT Threads
3/4" (20 mm)	3/4	35	51.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	1	37	60.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1 1/2" (40 mm)	1 1/2	57	81	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

Straight Reducing Adapters, Female Quick Connect × Female Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

These adapters have pipe threads on one end to connect to your compressor or other component.

Threaded connections can be taken apart as needed for maintenance and repair.

(A)
For Pipe OD	Socket Dp., mm	Pipe Size (B)	Lg., mm	Material	Color	Max. Pressure		Each
Blue Collar
NPT Threads
3/4" (20 mm)	35	1/2	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	3/4	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	1 1/4	80	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
NPT Threads
3/4" (20 mm)	35	1/2	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	37	3/4	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1 1/2" (40 mm)	57	1 1/4	80	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

Straight Reducing Adapters, Female Quick Connect × Male Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

These adapters have pipe threads on one end to connect to your compressor or other component.

Threaded connections can be taken apart as needed for maintenance and repair.

(A)
For Pipe OD	Socket Dp., mm	Pipe Size (B)	Lg., mm	Material	Color	Max. Pressure		Each
Blue Collar
NPT Threads
3/4" (20 mm)	35	1/2	49	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	1/2	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	3/4	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	1 1/4	81	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
NPT Threads
3/4" (20 mm)	35	1/2	49	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	37	1/2	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	37	3/4	55	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1 1/2" (40 mm)	57	1 1/4	81	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

Straight Reducing Adapters, Female Quick Connect × Male Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Use these adapters with a connector (sold separately) to change the line's size. The male end of these adapters should match the size of the connector. The female end of these adapters will reduce the size of the line. To install, remove and discard the connector's nut, grip ring, and collar. Thread the male end of the adapter into the female end of the connector.

	(B)
For Pipe OD (A)	For Pipe OD	Socket Dp., mm	Lg., mm	Material	Color	Max. Pressure		Each
Blue Collar
3/4" (20 mm)	1" (25 mm)	35	46	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
3/4" (20 mm)	1 1/2" (40 mm)	35	59.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	1 1/2" (40 mm)	37	60.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
3/4" (20 mm)	1" (25 mm)	35	46	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
3/4" (20 mm)	1 1/2" (40 mm)	35	59.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	1 1/2" (40 mm)	37	60.5	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

Single-Outlet Elbow Adapters with Mounting Tab, Female Quick Connect Pipe x Female Quick Disconnect Hose

Adapter

Strut Channel Adapter

Handle

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Fittings with outlets supply air where it’s needed using ¼ universal quick-disconnect couplings. They're compatible with Industrial, ARO, or European plugs. Connect them to a saddle tap tee anywhere along your pipeline. Each outlet also has a ¼ NPT port for draining the line or attaching a pressure gauge. Connect to strut channel with a strut-mount adapter (sold separately). Do not use them in vacuum applications.

Adapters
						Mounting Holes					Valve Handles		Strut Channel Adapters
For Pipe OD (A)	Coupling Size (B)	Material	Color	Max. Pressure	Mounting Fasteners Included	Dia., mm	No. of	Includes		Each		Each		Each
Blue Collar
3/4" (20 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	0000000	0000000	0000000	000000	0000000	000000
1" (25 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	0000000	000000	0000000	00000	0000000	00000
Gray Collar
3/4" (20 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	00000000	000000	0000000	00000	0000000	00000
1" (25 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	00000000	000000	0000000	00000	0000000	00000

Double-Outlet Elbow Adapters with Mounting Tab, Female Quick Connect Pipe x Female Quick Disconnect Hose

Adapter

Strut Channel Adapter

Handle

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Adapters
						Mounting Holes					Valve Handles		Strut Channel Adapters
For Pipe OD (A)	Coupling Size (B)	Material	Color	Max. Pressure	Mounting Fasteners Included	Dia., mm	No. of	Includes		Each		Each		Each
Blue Collar
3/4" (20 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	0000000	0000000	0000000	000000	0000000	000000
1" (25 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	0000000	000000	0000000	00000	0000000	00000
Gray Collar
3/4" (20 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	00000000	000000	0000000	00000	0000000	00000
1" (25 mm)	1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	No	6	4	Valve	00000000	000000	0000000	00000	0000000	00000

90° Elbow Connectors, Female Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Blue Collar
For Pipe OD	Socket Dp., mm	Material	Color	Max. Pressure		Each
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000

90° Elbow Adapters, Female Quick Connect × Male Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Threaded connections can be taken apart as needed for maintenance and repair.

(A)
For Pipe OD	Socket Dp., mm	Pipe Size (B)	Material	Color	Max. Pressure		Each
Blue Collar
NPT Threads
1 1/2" (40 mm)	57	1 1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
Gray Collar
NPT Threads
1 1/2" (40 mm)	57	1 1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

90° Elbow Reducing Adapters, Female Quick Connect × Male Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9

Threaded connections can be taken apart as needed for maintenance and repair.

(A)
For Pipe OD	Socket Dp., mm	Pipe Size (B)	Material	Color	Max. Pressure		Each
Blue Collar
NPT Threads
3/4" (20 mm)	35	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	3/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	1 1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
NPT Threads
3/4" (20 mm)	35	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	37	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1" (25 mm)	37	3/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1 1/2" (40 mm)	57	1 1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000
1 1/2" (40 mm)	57	2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	00000000	00000

45° Elbow Connectors, Female Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Blue Collar
For Pipe OD	Socket Dp., mm	Material	Color	Max. Pressure		Each
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000

Tee Connectors, Female Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Blue Collar
For Pipe OD	Socket Dp., mm	Material	Color	Max. Pressure		Each
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
3/4" (20 mm)	35	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000

Inline Tee Reducing Adapters, Female Quick Connect × Female Threaded

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Threaded connections can be taken apart as needed for maintenance and repair.

(A)
For Pipe OD	Socket Dp., mm	Pipe Size (B)	Material	Color	Max. Pressure		Each
Blue Collar
NPT Threads
3/4" (20 mm)	35	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	000000
1" (25 mm)	37	3/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	1 1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
Gray Collar
NPT Threads
3/4" (20 mm)	35	1/2	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1" (25 mm)	37	3/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	57	1 1/4	Epoxy-Coated 6061 Aluminum	Black	230 psi @ 72° F	0000000	00000

Saddle Tap Tees, Female Quick Connect × Clamp On

Tee

Hole Saw

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Saddle tap tees bolt onto pipe to add connections without requiring you to disassemble your system. You can use them to connect your ceiling-mounted pipe to equipment below. To install, drill through the threaded outlet into your pipe with a hole saw (sold separately).

Tees
For Pipe OD								Hole Saws
(A)	(B)	Lg., mm	Material	Max. Pressure	Includes		Each		Each
3/4" (20 mm)	1" (25 mm)	33	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	000000	0000000	000000
3/4" (20 mm)	1 1/2" (40 mm)	38	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	00000	0000000	00000
1" (25 mm)	1 1/2" (40 mm)	38	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	00000	0000000	00000

Saddle Tap Tees, Female Threaded × Clamp On

Tee

Tee with Cap

Hole Saw

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Threaded connections can be taken apart as needed for maintenance and repair.

Tees								Hole Saws
Pipe Size (A)	For Pipe OD (B)	Lg., mm	Material	Max. Pressure	Includes		Each		Each
NPT Threads
1/2	1" (25 mm)	33	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	__	0000000	000000	0000000	000000
1/2	1" (25 mm)	33	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	00000	0000000	00000
1/2	1 1/2" (40 mm)	33	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	00000	0000000	00000
1/2	1 1/2" (40 mm)	47	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	__	0000000	00000	0000000	00000
3/4	1 1/2" (40 mm)	38	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	Cap	0000000	00000	0000000	00000
3/4	1 1/2" (40 mm)	47	Epoxy-Coated 6061 Aluminum	580 psi @ 72° F	__	0000000	00000	0000000	00000

Plugs, Female Quick Connect

For Use With: Air, Coolant, Nitrogen, Oil
Temperature Range: 0° to 210° F
Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
Pipe Nipples and Pipe: Use Quick-Disconnect Aluminum

Plugs block the end of a fitting. They include a ¼ BSPP valve that can be used to exhaust your line or attach a pressure gauge. To install, remove the fitting's nut, collar, and grip ring. Insert the plug into the fitting, slide the collar on, and tighten the nut. Discard the connector's grip ring.

For Pipe OD	Socket Dp., mm	Lg., mm	Material	Max. Pressure		Each
1/2" (20 mm)	23	40	Epoxy-Coated 6061 Aluminum	1,015 psi @ 72° F	0000000	000000
1" (25 mm)	31	49	Epoxy-Coated 6061 Aluminum	1,015 psi @ 72° F	0000000	00000
1 1/2" (40 mm)	43	62	Epoxy-Coated 6061 Aluminum	1,015 psi @ 72° F	0000000	00000

Wrenches

For Pipe OD	Drive Size, mm	Overall Lg., mm	Head Thick., mm	Material		Each
3/4" (20 mm)	20	172	5	Galvanized Steel	0000000	000000
1" (25 mm)	25	192	5	Galvanized Steel	0000000	00000
1 1/2" (40 mm)	40	245	5	Galvanized Steel	0000000	00000

Measuring Tools

Use measuring tools to mark your pipe’s proper insertion depth so you know if it’s inserted far enough into the fitting.

Max. Dp. Measured, mm	Lg., mm	Wd., mm	Material		Each
160	224	39	Plastic	0000000	000000