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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Selecting Clamps Using Pipe, Conduit, or Tubing Trade Size
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Medium-Pressure Pipe Repair Clamps
Use these clamps to repair pinholes and cracks in medium-pressure applications. They slip over your pipe, so there's no need to disassemble your system. Choose a clamp that’s long enough to cover your damaged area with at least 1” on both sides.
Clamps with partial-coverage gaskets, also known as patch clamps, repair pinholes and small cracks. The gasket on these clamps wraps around as much as 40% of the pipe. Unlike clamps with full-coverage gaskets, you'll need to line up the gasket so it completely covers the damaged area on both sides.
Fluoroelastomer gaskets resist most chemicals. They can be used with steam and other high-temperature applications.
Iron clamps are often called emergency clamps.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Diesel Fuel, Hydraulic Fluid, Oil, Water
- Temperature Range: -20° to 250° F
- For Pipe Material: Iron, Steel
For Pipe OD | For Pipe Size | Lg. | Max. Pressure | Material | Each | |
| 0.84" | 1/2 | 3 1/4" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 1.05" | 3/4 | 3 1/4" | 600 psi @ 72° F | Iron | 0000000 | 00000 |
| 1.315" | 1 | 3 1/2" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 1.66" | 1 1/4 | 3 3/4" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 1.9" | 1 1/2 | 4" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 2 3/8" | 2 | 4 1/4" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 2 7/8" | 2 1/2 | 4 1/2" | 600 psi @ 72° F | Iron | 0000000 | 000000 |
| 3 1/2" | 3 | 4 3/4" | 500 psi @ 72° F | Iron | 0000000 | 000000 |
| 4 1/2" | 4 | 6" | 500 psi @ 72° F | Iron | 0000000 | 000000 |
| 6 5/8" | 6 | 8" | 400 psi @ 72° F | Iron | 0000000 | 000000 |
| 8 5/8" | 8 | 9 7/8" | 300 psi @ 72° F | Iron | 0000000 | 000000 |
| 10 3/4" | 10 | 11 7/8" | 200 psi @ 72° F | Iron | 0000000 | 00000000 |
- For Use With: Air, Coolant, Diesel Fuel, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Temperature Range: -40° to 450° F
- For Pipe Material: Stainless Steel, Iron, Steel, Aluminum, PVC Plastic, Copper
| For Pipe OD | For Pipe Size | Lg. | Max. Pressure | Max. Steam Pressure | Material | Each | |
| 0.84" | 1/2 | 3 1/4" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 0000000 | 0000000 |
| 1.05" | 3/4 | 3 1/4" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 0000000 | 000000 |
| 1.315" | 1 | 3 1/2" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 00000000 | 000000 |
| 1.66" | 1 1/4 | 3 3/4" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 00000000 | 000000 |
| 1.9" | 1 1/2 | 4" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 00000000 | 000000 |
| 2 3/8" | 2 | 4 1/4" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 00000000 | 000000 |
| 2 7/8" | 2 1/2 | 4 1/2" | 600 psi @ 72° F | 600 psi @ 300° F | Iron | 00000000 | 000000 |
| 3 1/2" | 3 | 4 3/4" | 500 psi @ 72° F | 500 psi @ 300° F | Iron | 00000000 | 000000 |
| 4 1/2" | 4 | 6" | 500 psi @ 72° F | 500 psi @ 300° F | Iron | 00000000 | 000000 |
Low-Pressure Easy-Install Pipe Repair Clamps
- For Use With: Water
- Temperature Range: 32° to 212° F
- For Pipe Material: Copper
Snap these clamps around leaking pipe with only your hands. No tools required. The gasket lines the edges of the clamp instead of the inside like in traditional pipe clamps, giving you a tight seal around uneven pipe and leaking pipe fittings. This gasket is made of TPE rubber and works well with water.
For technical drawings and 3-D models, click on a part number.
Interlocking Clamps for Hose Fittings for Steam
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -20° to 450° F
- Compatible With: Dixon Boss, Dixon Ground Joint
Use with interlocking-clamp hose fittings to replace a damaged clamp. They consist of two halves held together by nuts and bolts. Clamps are strong and durable with fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Hose ID | For Hose OD Range | Clamp Material | Each | |
Zinc-Plated Steel | ||||
|---|---|---|---|---|
| 1/4" | 9/16" to 21/32" | Zinc-Plated Steel | 0000000 | 000000 |
| 3/8" | 11/16" to 7/8" | Zinc-Plated Steel | 0000000 | 00000 |
| 1/2" | 15/16" to 1 1/16" | Zinc-Plated Steel | 0000000 | 00000 |
| 3/4" | 1 5/32" to 1 5/16" | Zinc-Plated Steel | 0000000 | 00000 |
| 3/4" | 1 5/16" to 1 1/2" | Zinc-Plated Steel | 0000000 | 00000 |
| 1" | 1 11/16" to 1 15/16" | Zinc-Plated Steel | 0000000 | 00000 |
Zinc-Plated Iron | ||||
| 1/2" | 1 1/16" to 1 3/16" | Zinc-Plated Iron | 0000000 | 00000 |
| 2" | 2 1/2" to 2 25/32" | Zinc-Plated Iron | 0000000 | 00000 |
Interlocking-Clamp Hose Fittings for Steam
Also known as ground-joint couplings and boss couplings, these fittings are designed for high-pressure steam heating, humidification, and washdown applications. Insert the barbed end of the fitting into rubber hose, then position the interlocking clamp over the hose and bolt into place with a torque wrench. The clamp firmly grips the hose as it locks into the ring of the barbed end, creating a leak tight seal. The interlocking clamps are not reusable. Fittings are strong and durable with fair corrosion resistance.
Fittings with a female threaded end have a hex bushing (also known as a female spud) that connects to a male interlocking-clamp hose fitting. Replace the hex bushing with a hex nipple (sold separately) to connect two female fittings; the hex nipples are also known as double spuds.
Warning: There is no valve in these couplings. Stop the flow of steam before you disconnect the hose line.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -20° to 450° F
- Attachment Type: Use Interlocking Clamps (included)
- Compatible With: Dixon Boss, Dixon Ground Joint
Adapters | Replacement Interlocking Clamps | |||||||
|---|---|---|---|---|---|---|---|---|
| For Hose ID | For Hose OD Range | Pipe Size | Thread Type | Clamp Material | Each | Each | ||
Zinc-Plated Steel | ||||||||
| 1/2" | 15/16" to 1 1/16" | 1/2 | NPT | Zinc-Plated Steel | 0000000 | 000000 | 0000000 | 000000 |
| 1/2" | 1 1/16" to 1 3/16" | 1/2 | NPT | Zinc-Plated Iron | 0000000 | 00000 | 0000000 | 00000 |
| 3/4" | 1 5/32" to 1 5/16" | 3/4 | NPT | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 |
| 3/4" | 1 5/16" to 1 1/2" | 3/4 | NPT | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 |
| 1" | 1 11/16" to 1 15/16" | 1 | NPT | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 |
Zinc-Plated Iron | ||||||||
| 2" | 2 1/2" to 2 25/32" | 2 | NPT | Zinc-Plated Iron | 0000000 | 00000 | 0000000 | 00000 |
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -20° to 450° F
- Attachment Type: Use Interlocking Clamps (included)
- Compatible With: Dixon Boss, Dixon Ground Joint
Adapters | Replacement Interlocking Clamps | Replacement Hex Bushings | Hex Nipples | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hose ID | For Hose OD Range | Pipe Size | Thread Type | Clamp Material | Wing Nut Material | Hex Bushing Material | Each | Each | Each | Each | ||||
Zinc-Plated Steel | ||||||||||||||
| 1/4" | 9/16" to 21/32" | 1/4 | NPT | Zinc-Plated Steel | __ | Zinc-Plated Steel | 0000000 | 000000 | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
| 3/8" | 11/16" to 7/8" | 3/8 | NPT | Zinc-Plated Steel | __ | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 000000 | 00 | 000000 | 00 |
| 1/2" | 15/16" to 1 1/16" | 1/2 | NPT | Zinc-Plated Steel | Zinc-Plated Iron | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 | 0000000 | 000000 |
| 1/2" | 1 1/16" to 1 3/16" | 1/2 | NPT | Zinc-Plated Iron | Zinc-Plated Iron | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
| 3/4" | 1 5/32" to 1 5/16" | 3/4 | NPT | Zinc-Plated Steel | Zinc-Plated Iron | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
| 3/4" | 1 5/16" to 1 1/2" | 3/4 | NPT | Zinc-Plated Steel | Zinc-Plated Iron | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
| 1" | 1 11/16" to 1 15/16" | 1 | NPT | Zinc-Plated Steel | Zinc-Plated Iron | Zinc-Plated Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
Zinc-Plated Iron | ||||||||||||||
| 2" | 2 1/2" to 2 25/32" | 2 | NPT | Zinc-Plated Iron | Zinc-Plated Iron | Zinc-Plated Iron | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
Railing Clamps
Clamp onto metal tubes such as pipe, scaffolding, and railing to hang lighting fixtures, threaded rod, and equipment. Made of aluminum, all of these clamps are lightweight and have good corrosion resistance.
Clamps with a black anodized finish blend into dark backgrounds and are more corrosion resistant than unfinished clamps.Style C clamps have wing nuts for making adjustments. Remove the wing nut from the bottom bolt and reattach after mounting equipment.
Style D clamps have a wing nut and a bolt for making adjustments. To mount equipment, remove the bolt on the bottom of the hanger, mount the equipment, and reattach the bolt. To hang threaded rod, remove the bolt and replace it with threaded rod.
For technical drawings and 3-D models, click on a part number.