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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About Backflow-Prevention Valves
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About Fire-Fighting Hose Threads
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Low-Pressure Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
Connectors with NPT threads are threaded on both ends.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
|---|---|---|---|---|---|
| 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Iron | 000000000 | 0000000 |
Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings
The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.
- Pressure Class: 150
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
| Pipe Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | |||||
|---|---|---|---|---|---|
| 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000000 |
Low-Pressure Brass and Bronze Threaded Pipe Fittings
Use these fittings in low-pressure flow applications. They have good corrosion resistance. Fittings rated for use with drinking water meet NSF/ANSI 61 safety standards.
- For Use With: Air, Drinking Water, Natural Gas, Oil
- Pressure Class: 125
- Specifications Met: ASME B16.15, NSF/ANSI 61, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 brass
- Flanges: Use Class 150 brass
| Pipe Size | Max. Pressure | Material | Each | |
NPT Female | ||||
|---|---|---|---|---|
| 2 1/2 | 200 psi @ 72° F | Brass | 00000000 | 0000000 |
Standard-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 40 plastic pipe–they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.
Fittings for drinking water meet NSF/ANSI Standard 61.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
Fittings that meet ASTM D1784, ASTM D1785, and ASTM D4066 adhere to specifications and testing requirements for material quality.
Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Flanges: Use Class 150 PVC Plastic
| Pipe Size | Socket Depth | Material | Color | Each | |
| 2 1/2 | 1 3/4" | PVC Plastic | White | 00000000 | 000000 |
Thick-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 80 pipe. With thicker, stronger walls than standard-wall fittings, they can handle heavy duty supply applications, such as water processing, wastewater treatment, and irrigation. Fittings are plastic for good corrosion resistance. They meet ASTM specifications and testing requirements for material quality.
Fittings for drinking water meet NSF/ANSI Standard 61.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).
Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
- Flanges: Use Class 150 PVC Plastic
| Pipe Size | Socket Depth | Material | Color | Each | |
| 2 1/2 | 1 3/4" | PVC Plastic | Dark Gray | 00000000 | 0000000 |
CPVC Pipe Fittings for Hot Water
Made of CPVC, these fittings can handle high temperatures. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing and waste water treatment. They also have good corrosion resistance. These fittings are comparable to Corzan. Some meet ASTM D1784 specifications and testing requirements for material quality.
Fittings for drinking water meet NSF/ANSI Standard 61.
Schedule 80 fittings have thick, strong walls for heavy duty, industrial applications.
Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
- For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
- Maximum Temperature: 200° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
- Flanges: Use Class 150 CPVC Plastic
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).
| Pipe Size | Socket Depth | Material | Schedule | Color | Max. Pressure | Each | |
| 2 1/2 | 1 3/4" | CPVC Plastic | 80 | Light Gray | Not Rated | 00000000 | 0000000 |
Diverting Valves with Fire-Fighting Hose Fittings
- Valve Type: Ball
- For Use With: Water
- Seal Material: Buna-N Rubber
Control the flow of water in two directions from a single source—these diverting valves have two balls and handles for independent operation of each outlet. They can direct flow to one side outlet at full capacity while shutting off flow to the second side outlet, direct flow to both side outlets at reduced capacity, or shut off flow to both side outlets. Valves have a brass body for good corrosion resistance. They are for use with fire-fighting hose.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
Male NPSH (National Pipe Straight Hose) threads are compatible with female NPSH threads. Female NPSH threads are compatible with male NPSH, NPT, NPTF, and NPSM threads.
| Inlet Pipe Size | Outlet Pipe Sizes | Flow Pattern | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Each | |
Brass Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2 1/2 | 1 1/2 × 1 1/2 | Y-Pattern | Not Rated | 300 psi @ 150° F | -20° to 150° | 5 5/8" | 000000 | 0000000 |
PVC Y-Strainers
- For Use With:
Dark Gray: Water and Diesel Fuel
Clear: Water - Max. Pressure: 150 psi @ 70° F
- Temp. Range:
Dark Gray: 40° to 140° F
Clear: 40° to 120° F
PVC construction is lightweight and provides excellent corrosion resistance. Install them prior to valves, pumps, and nozzles to catch debris in your pipeline and protect sensitive equipment. Strainers have a threaded drain with a hex cap or plug that provides access to the screen without disconnecting your line.
Strainers with socket-connect pipe connections attach to unthreaded pipe with cement for a permanent, leak-tight connection.
Strainers | Replacement Screens | Replacement Caps | Replacement Gaskets | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Socket Connect Type | Lg. | Ht. | For Fitting Schedule | For Pipe Schedule | Features | Choose a Screen Opening Size | Each | Each | Each | Each | ||||
Dark Gray Strainer with PVC Plastic Screen | |||||||||||||||
| 2 1/2 | Cement | 10 5/16" | 9 3/4" | 80 | 80 | Threaded Drain with Hex Cap | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 0000000 | 000000 | |
Screens for PVC Y-Strainers
Mesh screens typically filter smaller particles than perforated screens. To replace your screen, measure the OD and length and find the corresponding screen listed in the table.
Low-Pressure Iron Y-Strainers
A rugged iron body provides excellent strength and durability. Strainers prevent damage to valves, pumps, nozzles, and other sensitive equipment by catching debris in your pipeline. They are designed for low-pressure applications. Strainers are for use in noncorrosive environments. They have a threaded drain with a plug that provides access to the screen without disconnecting your line.
Strainers with flanged pipe connections allow for easy access to your pipeline; bolt them to a flange with the same pipe size.
Strainers | Replacement Screens | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Lg. | Ht. | Plug Pipe Size | Screen Material | Choose a Screen Mesh Size | Choose a Screen Opening Size | Each | Each | ||
With Mesh and Perforated Screen | ||||||||||
| 2 1/2 | 8 7/8" | 9 3/4" | 1 1/4 | 304 Stainless Steel | __ | 0000000 | 0000000 | 0000000 | 000000 | |
| 2 1/2 | 8 7/8" | 9 3/4" | 1 1/4 | 304 Stainless Steel | 20 | __ | 0000000 | 000000 | 0000000 | 000000 |
With Perforated Screen | ||||||||||
| 2 1/2 | 8 7/8" | 9 3/4" | 1 1/4 | 304 Stainless Steel | __ | 0000000 | 000000 | 0000000 | 00000 | |
Screens for Low-Pressure Iron Y-Strainers
Mesh screens typically filter smaller particles than perforated screens. To replace your screen, measure the OD and length and find the corresponding screen listed in the table.
| For Pipe Size | Screen OD | Screen Length | Screen Material | Screen Mesh Size | Screen Opening Size | Each | ||
Mesh and Perforated | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 20 | __ | 0000000 | 0000000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 40 | __ | 00000000 | 00000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 60 | __ | 00000000 | 00000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 80 | __ | 00000000 | 00000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 100 | __ | 00000000 | 00000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 150 | __ | 00000000 | 00000 |
| B | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | 200 | __ | 00000000 | 00000 |
Perforated | ||||||||
| B | 2 1/2 | 2 7/8" | 5 3/8" | 304 Stainless Steel | __ | 1/32" | 00000000 | 00000 |
| B | 2 1/2 | 2 7/8" | 5 3/8" | 304 Stainless Steel | __ | 1/16" | 00000000 | 00000 |
| B | 2 1/2 | 2 7/8" | 5 3/8" | 304 Stainless Steel | __ | 1/8" | 00000000 | 00000 |
| C | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | __ | 1/32" | 0000000 | 00000 |
| C | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | __ | 1/16" | 00000000 | 00000 |
| C | 2 1/2 | 2 5/8" | 6 9/16" | 304 Stainless Steel | __ | 1/8" | 00000000 | 00000 |
Low-Pressure Bronze Y-Strainers
- Max. Pressure for Water, Oil, Inert Gas, and Diesel Fuel: 200 psi @ 70° F
Max. Pressure for Steam: 125 psi @ 400° F - Temp. Range: -20° to 400° F
Install these strainers prior to valves, pumps, and nozzles to catch debris in your pipeline and protect sensitive equipment. They are designed for low-pressure applications. Strainers have a threaded drain with a plug that provides access to the screen without disconnecting your line. They are bronze for good corrosion resistance.
Strainers | Replacement Screens | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Lg. | Ht. | Plug Pipe Size | Screen Material | Screen OD | Screen Lg. | Choose a Screen Mesh Size | Choose a Screen Opening Size | Each | Each | ||
With Mesh Screen | |||||||||||||
| 2 1/2 | NPT | 9" | 7 3/4" | 1/2 | 304 Stainless Steel | 2 5/8" | 5 7/16" | 20 | __ | 00000000 | 0000000 | 000000000 | 0000000 |
| 2 1/2 | NPT | 9" | 7 3/4" | 1/2 | 304 Stainless Steel | 2 47/64" | 5 7/16" | __ | 00000000 | 000000 | 00000000 | 000000 | |
With Perforated Screen | |||||||||||||
| 2 1/2 | NPT | 9" | 7 3/4" | 1/2 | 304 Stainless Steel | 2 3/4" | 5 7/16" | __ | 000000000 | 000000 | 000000000 | 000000 | |
Screens for Low-Pressure Bronze Y-Strainers
Mesh screens typically filter smaller particles than perforated screens. To replace your screen, measure the OD and length and find the corresponding screen listed in the table.
High-Flow Threaded Check Valves
To achieve the maximum possible flow, internal components are designed to reduce flow resistance. These valves open to allow flow in one direction and close when flow stops or reverses. A removable cap provides easy access to internal components for maintenance.
Repair kits include everything you need to rebuild the valve.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
- Disc Material: See table
- Seal Material: See table
Valves | Repair Kits | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Disc Material | Seal Material | End-to-End Lg. | Features | Each | Each | ||
NPT Female × NPT Female—Pressure Class 200 | |||||||||||||
| 2 1/2 | 150 | 400 psi @ 150° F | 200 psi @ 388° F | 0.5 | -20° to 550° | Bronze | Bronze | 7" | Removable Cap | 0000000 | 0000000 | 00000000 | 000000000 |
NPT Female × NPT Female—Pressure Class 300 | |||||||||||||
| 2 1/2 | 150 | 600 psi @ 150° F | 300 psi @ 422° F | 0.5 | -20° to 550° | Bronze | Bronze | 7" | Removable Cap | 0000000 | 00000000 | 00000000 | 00000000 |