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 Socket-Connect Stainless Steel Unthreaded Pipe Fittings
The highest-quality socket-connect fittings available, these meet ANSI/MSS SP-114 standards for heat treating, material thickness, and marking. Also known as Pressure Class 150 fittings, they are designed for low-pressure applications. Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Union straight connectors separate into three pieces for access to your line.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ANSI/MSS SP-114, ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|
| Pipe Size  | Max. Pressure | Each | Each | ||
| 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 0000000 | 0000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
- For Use With: Air, Natural Gas, Oil, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ANSI/MSS SP-114, ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Each | Each | ||
| 1/2 | 300 psi @ 72° F | 0000000 | 000000 | 00000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 1 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
- For Use With: Air, Natural Gas, Oil, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ANSI/MSS SP-114, ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Each | Each | ||
| 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
- For Use With: Air, Natural Gas, Oil, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ANSI/MSS SP-114, ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Each | Each | ||
| 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
- For Use With: Air, Natural Gas, Oil, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ANSI/MSS SP-114, ASTM A351
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Each | Each | ||
| 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
| 3/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 00000 |
| 2 | 300 psi @ 72° F | 0000000 | 00000 | 00000000 | 000000 |
Low-Pressure Press-Connect Stainless Steel Unthreaded Pipe Fittings
- For Use With:
304 Stainless Steel: Air, Ethylene Glycol, Propylene Glycol, Water, Diesel Fuel, Fuel Oil
316 Stainless Steel: Drinking Water, Isopropyl Alcohol, Nitric Acid (10%), Phosphoric Acid (25%), Deionized Water, Anhydrous Ammonia - Maximum Pressure:
304 Stainless Steel: 125 psi @ 72° F
316 Stainless Steel: 200 psi @ 72° F - Specifications Met:
304 Stainless Steel: ASME B31.1, ASME B31.3, ASME B31.9
316 Stainless Steel: ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, NSF/ANSI 372 - O-Ring Material:
304 Stainless Steel: Fluoroelastomer Rubber
316 Stainless Steel: EPDM 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. These fittings are comparable to Viega MegaPress fittings.
Fittings meet ANSI/ASME B31 code requirements for use in pressure piping systems.
304 stainless steel fittings resist corrosion from frequent exposure to water and fuels. They are often used for water processing lines, heating and cooling systems, and fuel lines.
316 stainless steel fittings stand up to harsh environments with constant exposure to chemical solutions. They meet NSF/ANSI Standard 61 for use with drinking water, and are often found on water and chemical processing lines in corrosive environments.
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.
Union straight connectors separate into three pieces. Unscrew and remove the center nut for quick access to a line.
Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
For technical drawings and 3-D models, click on a part number.
Press Connect ×
Male Threaded
Press Connect ×
Female Threaded
Bolt Hole | 316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Pressure Class | Lg. | Each | |
| 1/2 | 1 1/16" | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 | 2 3/16" | 00000000 | 0000000 |
| 3/4 | 1 3/16" | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 | 2 25/64" | 00000000 | 000000 |
| 1 | 1 3/8" | 4 3/8" | 1/2" | 5/8" | 4 | 3 1/8" | 150 | 2 11/16" | 00000000 | 000000 |
| 1 1/2 | 1 7/8" | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 | 3 23/64" | 00000000 | 000000 |
| 2 | 2" | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 | 3 1/2" | 00000000 | 000000 |
Male Press Connect ×
Female Press Connect
(A) | (B) | 304 Stainless Steel | 316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | OD | ID | Wall Thick. | Pipe Size | Socket Dp. | Lg. | Each | Each | ||
| 3/4 | 1 3/64" | 0.824" | 0.113" | 1/2 | 1 1/16" | 2 61/64" | 00000000 | 000000 | 00000000 | 000000 |
| 1 | 1 5/16" | 1.049" | 0.133" | 1/2 | 1 1/16" | 3 15/64" | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 1 5/16" | 1.049" | 0.133" | 3/4 | 1 3/16" | 3 17/64" | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 1 29/32" | 1.61" | 0.145" | 3/4 | 1 3/16" | 4 5/32" | 00000000 | 000000 | 00000000 | 000000 |
| 1 1/2 | 1 29/32" | 1.61" | 0.145" | 1 | 1 3/8" | 4 11/64" | 00000000 | 00000 | 00000000 | 000000 |
| 2 | 2 3/8" | 2.067" | 0.154" | 1 | 1 3/8" | 4 1/2" | 00000000 | 000000 | 00000000 | 000000 |
| 2 | 2 3/8" | 2.067" | 0.154" | 1 1/2 | 1 7/8" | 4 53/64" | 00000000 | 000000 | 00000000 | 000000 |
304 Stainless Steel | 316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | OD | ID | Wall Thick. | Socket Dp. | Each | Each | ||
| 1/2 | 27/32" | 0.622" | 0.109" | 1 1/16" | 000000 | 000000 | 000000 | 000000 |
| 3/4 | 1 3/64" | 0.824" | 0.113" | 1 3/16" | 000000 | 00000 | 000000 | 00000 |
| 1 | 1 5/16" | 1.049" | 0.133" | 1 3/8" | 000000 | 00000 | 000000 | 00000 |
| 1 1/2 | 1 29/32" | 1.61" | 0.145" | 1 7/8" | 000000 | 000000 | 000000 | 000000 |
| 2 | 2 3/8" | 2.067" | 0.154" | 2" | 000000 | 000000 | 0000000 | 000000 |
304 Stainless Steel | 316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | OD | ID | Wall Thick. | Socket Dp. | Each | Each | ||
| 1/2 | 27/32" | 0.622" | 0.109" | 1 1/16" | 0000000 | 000000 | 0000000 | 000000 |
| 3/4 | 1 3/64" | 0.824" | 0.113" | 1 3/16" | 0000000 | 00000 | 0000000 | 00000 |
| 1 | 1 5/16" | 1.049" | 0.133" | 1 3/8" | 0000000 | 00000 | 0000000 | 00000 |
| 1 1/2 | 1 29/32" | 1.61" | 0.145" | 1 7/8" | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2 3/8" | 2.067" | 0.154" | 2" | 0000000 | 000000 | 0000000 | 000000 |
Inline tees are also known as branch tees.
(A) | (B) | 304 Stainless Steel | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Pipe Size | Socket Dp. | Certification | Each | Each | ||
| 3/4 | 1 3/16" | 1/2 | 1 1/16" | IAPMO Listed | 0000000 | 0000000 | 0000000 | 0000000 |
| 1 | 1 3/8" | 1/2 | 1 1/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 | 1 3/8" | 3/4 | 1 3/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 1/2 | 1 1/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 3/4 | 1 3/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 1 | 1 3/8" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 1/2 | 1 1/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 3/4 | 1 3/16" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 1 | 1 3/8" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 1 1/2 | 1 7/8" | IAPMO Listed | 0000000 | 000000 | 0000000 | 000000 |
Inline tees are also known as branch tees.
(A) | (B) | 304 Stainless Steel | 316 Stainless Steel | ||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Dp. | Pipe Size | Thread Type | Each | Each | ||
| 3/4 | 1 3/16" | 1/2 | NPT | 0000000 | 0000000 | 0000000 | 0000000 |
| 1 | 1 3/8" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 1 | 1 3/8" | 3/4 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 3/4 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 1 1/2 | 1 7/8" | 1 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 1/2 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 3/4 | NPT | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 2" | 1 | NPT | 0000000 | 000000 | 0000000 | 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 |