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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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.
Connectors with center stop have a small internal ridge that prevents the pipe from sliding too far into the fitting and taking space from the pipe on the other side. Insert the pipe on each side of the connection up to the center stop to ensure a reliable seal.
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.
Adapter, Female Press
Connect × Male Threaded
(A) | (B) | 304 Stainless Steel | ||||
|---|---|---|---|---|---|---|
| Pipe Size  | Socket Dp. | Pipe Size | Thread Type | Lg. | Each | |
| 3/4 | 1 3/16" | 1/2 | NPT | 2 21/32" | 0000000 | 000000 |
Inline tees are also known as branch tees.
304 Stainless Steel | |||
|---|---|---|---|
| Pipe Size | Socket Dp. | Each | |
NPT Threads | |||
| 3/4 | 1 3/16" | 0000000 | 0000000 |
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.
Connectors with center stop have a small internal ridge that prevents the pipe from sliding too far into the fitting. Insert the pipe on each side of the connection up to the center stop to ensure a tight seal.
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 | Each | ||
| 1/2 | 0.188" | 2 45/64" | 00000000 | 000000 | 00000000 | 000000 |
| 3/4 | 0.188" | 2 15/16" | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 0.188" | 3 19/64" | 000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 0.375" | 4 5/16" | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 0.375" | 4 5/8" | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 0.375" | 4 45/64" | 00000000 | 00000 | 00000000 | 00000 |
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 | 000000 | 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 |
Press Connect ×
Male Threaded
EPDM Rubber O-Ring | Buna-N Rubber O-Ring | |||||
|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Lg. | Each | Each | ||
NPT Threads | ||||||
| 1/2 | 0.188" | 2 33/64" | 00000000 | 000000 | 00000000 | 000000 |
| 3/4 | 0.188" | 2 21/32" | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 0.188" | 3" | 00000000 | 00000 | 0000000 | 00000 |
| 1 1/4 | 0.375" | 3 41/64" | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 0.375" | 3 51/64" | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 0.375" | 3 29/32" | 00000000 | 00000 | 00000000 | 00000 |
Press Connect ×
Female Threaded
EPDM Rubber O-Ring | Buna-N Rubber O-Ring | |||||
|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Lg. | Each | Each | ||
NPT Threads | ||||||
| 1/2 | 0.188" | 2 19/64" | 00000000 | 000000 | 0000000 | 000000 |
| 3/4 | 0.188" | 2 29/64" | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 0.188" | 2 47/64" | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 0.375" | 3 3/16" | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 0.375" | 3 17/64" | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 0.375" | 3 27/64" | 00000000 | 00000 | 00000000 | 00000 |
Inline tees are also known as branch tees.
(A) | (B) | EPDM Rubber O-Ring | Buna-N Rubber O-Ring | ||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Pipe Size | Socket Dp. | Each | Each | ||
| 3/4 | 0.188" | 1/2 | 0.188" | 0000000 | 000000 | 00000000 | 000000 |
| 1 | 0.188" | 1/2 | 0.188" | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 0.188" | 3/4 | 0.188" | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 0.375" | 3/4 | 0.188" | 00000000 | 000000 | 00000000 | 000000 |
| 2 | 0.375" | 1 | 0.188" | 00000000 | 000000 | 00000000 | 000000 |
Inline tees are also known as branch tees.
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 |
Crimping Tools for Press-Connect Fittings for Copper Tubing
Create a leak-tight seal without using heat or solder. Slide copper tubing into a press-connect fitting and use these tools to crimp the connection.
Crimping tools seal the fitting in less than five seconds. Lightweight and cordless, you can take these tools to any job. Access your connection from any angle using the pivoting head.
Crimping tools come with two 2.5-amp-hrs.-capacity batteries. Upgrade to a 5-amp-hrs.-capacity battery for over 500 crimps per charge.
Jaws fit directly into a crimping tool to clamp copper tube sizes 1/2 to 2.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
Use rings for copper tube sizes 2 1/2 to 4. Clip the ring around the fitting and use the included ring actuator jaw and crimping tool (sold separately) to press the open ends together.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
| For Copper Tube Size | For Tube OD | Includes | Compatible With | Each | |
| 2 1/2, 3, 4 | 2 5/8", 3 1/8", 4 1/8" | Three Rings (2 1/2-4 Copper Tube Size) One Ring Actuator Jaw | Viega ProPress XL-C | 00000000 | 000000000 |