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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Press-Connect Fittings for Copper Tubing
- For Use With: Drinking Water
- Maximum Pressure: 200psi @ 72° F
- Temperature Range: 0° to 250° F
- Tubing: Use with K, M, L copper
- 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.
Unions separate into three pieces for easy access to your line. Union adapters for galvanized steel threaded pipe join copper tubing to galvanized threaded connections on hot water heaters.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
For technical drawings and 3-D models, click on a part number.
| Copper Tube Size  | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 19/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 29/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 3 29/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 3 33/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 4 15/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 2 | 2 1/8" | 2 | 4 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 17/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 27/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 2 7/8" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 2 31/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 3 7/8" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 2 | 2 1/8" | 2 | 3 59/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Pipe Size | Lg. | Material | Specifications Met | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/2 | 5/8" | 1/2 | 2 15/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 3/4 | 7/8" | 3/4 | 2 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 | 1 1/8" | 1 | 2 9/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/4 | 1 3/8" | 1 1/4 | 2 11/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 1 1/2 | 3 7/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 2 | 2 1/8" | 2 | 3 17/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| Copper Tube Size | For Tube OD | Lg. | Material | Specifications Met | Each | |
| 1/2 | 5/8" | 2 27/32" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 000000 |
| 3/4 | 7/8" | 3 5/32" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 00000 |
| 1 | 1 1/8" | 3 41/64" | Bronze | ASME B16.51, NSF/ANSI 61, UL 213 | 0000000 | 00000 |
| 1 1/4 | 1 3/8" | 3 11/16" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 00000 |
| 1 1/2 | 1 5/8" | 4 61/64" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
| 2 | 2 1/8" | 5 7/32" | Bronze | ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213 | 00000000 | 000000 |
Low-Pressure Press-Connect Stainless Steel Unthreaded Pipe Fittings
- For Use With: Air, Ethylene Glycol, Propylene Glycol, Water, Diesel Fuel, Fuel Oil
- Maximum Pressure: 125 psi @ 72° F
- Specifications Met: ASME B31.1, ASME B31.3, ASME B31.9
- O-Ring Material: Fluoroelastomer Rubber
- Pipe Nipples and Pipe: Use Schedule 10, 40 Stainless Steel
- Flanges: Use Class 150 Stainless Steel
Press these fittings onto stainless steel pipe using a crimping tool for a permanent, leak-tight connection that's faster than threading or welding and doesn't require heat. Fittings have an internal stainless steel gripping ring and rubber O-ring that create a seal when crimped. They are designed to leak if fittings have not been crimped; a colored dot marks the leak path so it's easy to spot unsealed connections. All of these fittings are made of 304 stainless steel to resist corrosion from frequent exposure to water and fuels. They’re often used for water processing lines, heating and cooling systems, and fuel lines. They are comparable to Viega MegaPress fittings.
Fittings meet ANSI/ASME B31 code requirements for use in pressure piping systems.
Straight union connectors separate into three pieces. Unscrew and remove the center nut for quick access to a line.
For technical drawings and 3-D models, click on a part number.
Crimping tools seal fittings in less than five seconds. These tools are cordless, so you can take them to any job. Connect the jaw or ring that matches your pipe size to these tools, then pull the trigger to crimp the fitting. The pivoting head lets you access connections from any angle.
Battery | |||||||
|---|---|---|---|---|---|---|---|
| Voltage | No. Included | Cap., amp-hrs. | Battery Charger Included | Battery Charging Time, min. | Compatible With | Each | |
| 18V DC | 2 | 3 | Yes | 39 | Viega MegaPress Viega ProPress Viega ProPress XL-C | 00000000 | 000000000 |
Jaw and ring sets include three jaws, three rings, and one ring actuator jaw. Jaws are for pipe sizes 1/2 to 1; they fit directly into the crimping tool. Rings are for pipe sizes 1 1/4 to 2; clip the ring around the fitting and use the ring actuator jaw and crimping tool to press the open ends together.
For Pipe | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Material | For Manufacturer | For Manufacturer Model No. | Compatible With | Includes | Container Type | Each | |
| 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 | Stainless Steel, Steel | Ridgid | RP 340 | Viega MegaPress | One Ring Actuator Jaw Three Jaws (1/2-1 Pipe Size) Three Rings (1 1/4-2 Pipe Size) | Carrying Case | 00000000 | 000000000 |
Low-Pressure Press-Connect Steel Unthreaded Pipe Fittings
- For Use On:
EPDM Rubber O-Ring: Ethylene Glycol, Propylene Glycol, Water
Buna-N Rubber O-Ring: Air, Lubricants, Propane, Fuel Oil, Natural Gas, Diesel Fuel - Specifications Met:
EPDM Rubber O-Ring: ASME B31,1, ASME B31.3, ASME B31.9, FM 1920, UL 213
Buna-N Rubber O-Ring: ASME B31.1, ASME B31.3, ASME B31.9, ANSI LC4/CSA 6.32, International Fuel Gas Code - Maximum Pressure:
EPDM Rubber O-Ring: 200 psi @ 72° F
Buna-N Rubber O-Ring: 125 psi @ 72° F - Pipe Nipples and Pipe: Use Schedule 40 Steel
- Flanges: Use Class 150 Steel
Crimp these fittings onto steel pipe to form a tightly sealed connection that’s faster than threading or welding and doesn’t require heat. An internal gripping ring and rubber O-ring create a secure seal when crimped. They are designed to leak if fittings have not been crimped; a colored dot marks the leak path so it's easy to spot unsealed connections. These steel fittings are coated in zinc-nickel to resist corrosion, but will rust if frequently exposed to saltwater or harsh chemicals. They are comparable to Viega MegaPress steel fittings.
Fittings meet ASME B31 code requirements for use in pressure piping systems.
Fittings with an EPDM rubber O-ring are often used for water processing lines, fire sprinklers, and heating and cooling systems. EPDM rubber won’t degrade when exposed to water, ethylene glycol, and propylene glycol. These fittings meet UL 213 and FM 1920 standards for use in fire protection systems.
Buna-N rubber O-rings hold up to natural gas, propane, diesel fuel, lubricants, and other oils. Fittings with these O-rings are often used in fuel gas systems and air lines. They meet the ANSI LC4/CSA 6.32 standard for fuel gas systems and comply with the International Fuel Gas Code.
Unions separate into three pieces. Unscrew and remove the center nut for quick access to a line.
For technical drawings and 3-D models, click on a part number.
EPDM Rubber O-Ring | Buna-N Rubber O-Ring | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Lg. | Each | Lg. | Each | ||
| 1/2 | 0.188" | 4 1/2" | 00000000 | 000000 | 4 15/32" | 00000000 | 000000 |
| 3/4 | 0.188" | 4 63/64" | 00000000 | 00000 | 4 63/64" | 00000000 | 00000 |
| 1 | 0.188" | 5 11/32" | 0000000 | 00000 | 5 19/64" | 00000000 | 000000 |
| 1 1/2 | 0.375" | 6 5/8" | 00000000 | 000000 | 6 41/64" | 00000000 | 000000 |
| 2 | 0.375" | 7 39/64" | 00000000 | 000000 | 7 11/32" | 00000000 | 000000 |
Crimping tools seal fittings in less than five seconds. These tools are cordless, so you can take them to any job. Connect the jaw or ring that matches your pipe size to these tools, then pull the trigger to crimp the fitting. The pivoting head lets you access connections from any angle.
Battery | |||||||
|---|---|---|---|---|---|---|---|
| Voltage | No. Included | Cap., amp-hrs. | Battery Charger Included | Battery Charging Time, min. | Compatible With | Each | |
| 18V DC | 2 | 3 | Yes | 39 | Viega MegaPress Viega ProPress Viega ProPress XL-C | 00000000 | 000000000 |
Jaw and ring sets include three jaws, three rings, and one ring actuator jaw. Jaws are for pipe sizes 1/2 to 1; they fit directly into the crimping tool. Rings are for pipe sizes 1 1/4 to 2; clip the ring around the fitting and use the ring actuator jaw and crimping tool to press the open ends together.
For Pipe | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Material | For Manufacturer | For Manufacturer Model No. | Compatible With | Includes | Container Type | Each | |
| 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 | Stainless Steel, Steel | Ridgid | RP 340 | Viega MegaPress | One Ring Actuator Jaw Three Jaws (1/2-1 Pipe Size) Three Rings (1 1/4-2 Pipe Size) | Carrying Case | 00000000 | 000000000 |