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 Stainless Steel Threaded Pipe Fittings
Use these fittings in a low-pressure pipe line. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Inline tees are also known as branch tees.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Fabrication: Heat Treated
- Specifications Met: ASTM A351
- Flanges: Use Class 150 stainless steel
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Pipe Size | 304 Stainless Steel | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Each | Each | ||
NPT Female | |||||||
| 1/4 | 1/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/8 | 1/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/8 | 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 1/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 3/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/4 | 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/4 | 3/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/4 | 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 3/8 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 | 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/4 | 1 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 1 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 1 1/2 | 1 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 1 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 1 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
| 2 | 1 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | 00000000 | 00000 | 00000000 | 00000 |
Thin-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Inline tees are also known as branch tees.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASME B16.9, ASTM A403, MSS SP-43
- Pipe: Use Schedule 10 stainless steel
Pipe Size | Wall Thick. | 304/304L Stainless Steel | 316/316L Stainless Steel | |||||
|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Construction | Each | Each | ||
| 1 | 1/2 | 0.109" | 0.083" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 1 | 3/4 | 0.109" | 0.083" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2 | 3/4 | 0.109" | 0.083" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 1 1/2 | 1 | 0.109" | 0.109" | Welded | 000000000 | 00000 | 000000000 | 000000 |
| 2 | 1 | 0.109" | 0.109" | Welded | 000000000 | 00000 | 000000000 | 000000 |
| 2 | 1 1/2 | 0.109" | 0.109" | Welded | 000000000 | 00000 | 000000000 | 000000 |
| 2 1/2 | 1 1/2 | 0.12" | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 2 1/2 | 2 | 0.12" | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 3 | 1 1/2 | 0.12" | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 3 | 2 | 0.12" | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 3 | 2 1/2 | 0.12" | 0.12" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 4 | 2 | 0.12" | 0.109" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 4 | 2 1/2 | 0.12" | 0.12" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 4 | 3 | 0.12" | 0.12" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 6 | 4 | 0.134" | 0.12" | Welded | 000000000 | 000000 | 000000000 | 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.
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 |