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.
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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.



- 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 | 



- 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 | 

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 | 
Press-Connect Fittings for Copper Tubing

- For Use With: Drinking Water
- Maximum Pressure: Fittings compatible with Viega ProPress or Viega ProPress XL-C: 200 psi @ 72° F
 Fittings compatible with Viega Pex or Viega PureFlow Press: 100 psi @ 72° F
- Temperature Range: 0° to 250° F
- Tubing: Fittings compatible with Viega ProPress or Viega ProPress XL-C: Use with K, M, L copper
 Fittings compatible with Viega Pex or Viega PureFlow Press: Use with hard polyethylene plastic
- Specifications Met: See table
Crimp these fittings to copper tubing with a crimping tool (sold separately). An O-ring on the inside of the fitting creates a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings. Fittings have good corrosion resistance. They meet NSF/ANSI safety standards for use with drinking water systems.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

| Mounting Hole | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Copper Tube Size | For Tube OD | Pipe Size | Material | Dia. | No. of | Compatible With | Specifications Met | Each | |
| NPT Threads | |||||||||
| 1/2 | 5/8" | 3/8 | Bronze | 1/4" | 6 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 000000 | 
| 1/2 | 5/8" | 1/2 | Bronze | 1/4" | 6 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 00000 | 
| 3/4 | 7/8" | 3/4 | Bronze | 1/4" | 6 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 00000 | 

| Mounting Hole | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Copper Tube Size | For Tube OD | Pipe Size | Material | Dia. | No. of | Compatible With | Specifications Met | Each | |
| NPT Threads | |||||||||
| 1/2 | 5/8" | 1/2 | Bronze | 1/4" | 2 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 000000 | 
| 3/4 | 7/8" | 3/4 | Bronze | 1/4" | 2 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 00000 | 
| 1 | 1 1/8" | 1/2 | Bronze | 1/4" | 2 | Viega ProPress | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61 | 00000000 | 00000 | 

Jaws for copper tube sizes ½ to 2 fit directly into the included crimping tool.
| Battery | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Copper Tube Size | For Tube OD | Voltage | No. Included | Cap., amp-hrs. | Battery Charger Included | Battery Charging Time, min. | Compatible With | Specifications Met | Each | |
| 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 | 5/8", 7/8", 1 1/8", 1 3/8", 1 5/8", 2 1/8" | 18V DC | 2 | 3 | Yes | 39 | Viega ProPress | EMC 2011/65/EU, EMC 2014/30/EU, IEC 62841-1, UL 62841-1 | 00000000 | 000000000 | 
Brass Push-to-Connect Fittings for Copper Tubing

- Tubing: Use with K, M, L copper, polyethylene plastic, CPVC
Connect these fittings to copper tubing with a push—no heat, solder, or flux required. They have an internal gripping ring and O-ring that hold the fitting secure. They also come with a tube support or retainer if you want to use them with polyethylene plastic (PEX) tubing. They are also known as instant fittings. Fittings are brass for good corrosion resistance. They are compatible with SharkBite® fittings. To adhere to safety standards for drinking water systems, use fittings that meet NSF/ANSI 61.

- For Use With: Air, Drinking Water
- Temperature Range: 32° to 200° F
- Specifications Met: NSF/ANSI 61
| Copper Tube Size | For Tube OD | Pipe Size | Material | Release Ring Material | Release Ring Color | Max. Pressure | Mounting Hole Dia. | Each | |
| NPT Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8 | 1/2" | 1/2 | Brass | Plastic | Black | 200 psi @ 72° F | 13/64" | 00000000 | 00000 | 
| 1/2 | 5/8" | 1/2 | Brass | Plastic | Black | 200 psi @ 72° F | 13/64" | 00000000 | 0000 | 
| 3/4 | 7/8" | 3/4 | Brass | Plastic | Black | 200 psi @ 72° F | 13/64" | 00000000 | 00000 | 

- For Use With: Air, Drinking Water, Water
- Temperature Range: 32° to 200° F
- Specifications Met: NSF/ANSI 61
| Copper Tube Size | Material | Release Ring Material | Release Ring Color | Max. Pressure | Each | |
| 1/2 | Brass | Plastic | Black | 200 psi @ 72° F | 00000000 | 000000 | 


A release clip is required to disconnect the fitting from the tubing.
Use release clips with a depth gauge to mark how far you need to insert your PVC pipe into its fitting to ensure a watertight connection.
| For Copper Tube Size | For Tube OD | For Pipe Size | For Pipe Material | Features | Each | |
| For Pipes | ||||||
|---|---|---|---|---|---|---|
| __ | __ | 1/2 | CPVC Plastic | __ | 00000000 | 00000 | 
| __ | __ | 1/2 | PVC Plastic | Depth Gauge | 00000000 | 0000 | 
| __ | __ | 3/4 | CPVC Plastic | __ | 00000000 | 0000 | 
| __ | __ | 3/4 | PVC Plastic | Depth Gauge | 00000000 | 0000 | 
| For Tubes | ||||||
| 3/8 | 1/2" | __ | __ | __ | 0000000 | 0000 | 
| 1/2 | 5/8" | __ | __ | __ | 0000000 | 0000 | 
| 3/4 | 7/8" | __ | __ | __ | 0000000 | 000 | 

Use the chamfering and deburring depth gauge tool (sold separately) to deburr tubing before inserting it into the fitting.
| For Copper Tube Size | For Tube OD | Each | |
| 3/8, 1/2, 3/4, 1 | 1/2", 5/8", 7/8", 1 1/8" | 00000000 | 000000 | 




























