Selecting and Measuring Expansion Joints
For information about selecting pipe size, see Selecting and Measuring Pipe & Fittings.
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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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Easy-Access CPVC Pipe Flanges for Chemicals
- For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Hydroxide, Sulfuric Acid (80%), Water
- Temperature Range: 32° to 200° F
- Specifications Met: ASTM D1784
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
The grooved ends on these flanges connect to pipe with a clamp, so you can access your chemical process line for routine maintenance. They are also known as Victaulic flanges. Bolt two same-size flanges together with a gasket (sold separately). Flanges are CPVC, which has excellent chemical resistance to withstand a variety of salt solutions, acids, and other harsh substances. They are comparable to Corzan. Flanges meet ASTM D1784 specifications and testing requirements for material quality.
Warning: Never use plastic pipe flanges and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
| Pipe Size  | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Each | |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | CPVC Plastic | Light Gray | 150 psi @ 72° F | 0000000 | 000000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | CPVC Plastic | Light Gray | 150 psi @ 72° F | 0000000 | 000000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | CPVC Plastic | Light Gray | 150 psi @ 72° F | 0000000 | 000000 |
Clamp connectors let you connect CPVC grooved-end pipe fittings and pipe.
| For Pipe Size | For Pipe OD | Material | Color | Gasket Material | Max. Pressure | Specifications Met | Each | |
| 2 | 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
| 3 | 3 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 00000 |
| 4 | 4 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 00000 |
Clamp adapters let you connect CPVC grooved-end pipe fittings and pipe to metal grooved-end pipe fittings and pipe.
Clamp reducers allow you to connect CPVC grooved-end pipe fittings and pipe and transition from a larger pipe size to a smaller pipe size.
| For Pipe Size | For Pipe OD | Material | Color | Gasket Material | Max. Pressure | Specifications Met | Each | |
| 3 × 2 | 3 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
| 4 × 2 | 4 1/2" × 2 3/8" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
| 4 × 3 | 4 1/2" × 3 1/2" | Enamel-Coated Iron | Orange | EPDM Rubber | 300 psi @ 72° F | ASTM D1784, ASTM F441 | 0000000 | 000000 |
High-Temperature PTFE Pipe Flanges for Chemicals
- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -450° to 550° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Fittings: Use Schedule 80 PTFE Plastic
Made of PTFE, these flanges can handle a wider temperature range than any of our other plastic pipe flanges for chemicals. They have the chemical resistance to stand up to acid and solvents. Also known as Pressure Class 150 flanges, they have thick, strong walls for heavy duty industrial applications. The material won’t leach contaminates into the line, so these flanges are commonly used in high-purity processes, such as semiconductor and clean room applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. When connecting to pipe, apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the flange, then wrench-tighten one to two turns. Flanges meet ASTM D1710 specifications and testing requirements for material quality.
Warning: Never use plastic pipe flanges and pipe with compressed air or gas.
Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Each | |
Fixed Flanges, Female Threaded × Flanged | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
NPT Threads | ||||||||||
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | PTFE Plastic | White | 60 psi @ 72° F | 000000000 | 0000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | PTFE Plastic | White | 50 psi @ 72° F | 000000000 | 000000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | PTFE Plastic | White | 35 psi @ 72° F | 000000000 | 000000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
Chemical-Resistant Expansion Joints with Flanged Ends
- For Use With: Coolant, Hydrochloric Acid, Water
- Temperature Range: -0° to 400° F
- Maximum Pressure: See table
- Maximum Vacuum: 29 in. of Hg @ 72° F
The PTFE body on these expansion joints has a super-smooth surface that stands up to corrosive chemicals. Joints have a triple-bulb design that provides excellent vibration absorption, reducing stress on your piping system. The flanges mate with a same-size flat-surface Class 150 flange without the need for a gasket. Limit rods are attached to the flanges to prevent overextension.
For technical drawings and 3-D models, click on a part number.
Distance | Threaded Bolt Holes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Max. Pressure | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | |
Ultra-Corrosion-Resistant Coated PTFE Plastic | ||||||||||||
| 5" | 1 1/2 | 2" | 4 | 1/2" | 1/2" | 1/4" | 130 psi @ 72° F | Triple Bulb | Iron | 1/2"-13 | 0000000 | 0000000 |
| 6" | 2 | 2 3/4" | 4 | 3/4" | 3/4" | 3/8" | 130 psi @ 72° F | Triple Bulb | Iron | 5/8"-11 | 0000000 | 000000 |
| 7" | 2 1/2 | 3 3/16" | 4 | 3/4" | 3/4" | 3/8" | 130 psi @ 72° F | Triple Bulb | Iron | 5/8"-11 | 0000000 | 000000 |
| 7 1/2" | 3 | 3 5/8" | 4 | 1" | 1" | 1/2" | 130 psi @ 72° F | Triple Bulb | Iron | 5/8"-11 | 0000000 | 000000 |
| 9" | 4 | 3 5/8" | 8 | 1" | 1" | 1/2" | 130 psi @ 72° F | Triple Bulb | Iron | 5/8"-11 | 0000000 | 00000000 |
| 11" | 6 | 4" | 8 | 1 1/8" | 1 1/8" | 9/16" | 130 psi @ 72° F | Triple Bulb | Iron | 3/4"-10 | 0000000 | 00000000 |
| 13 1/2" | 8 | 6" | 8 | 1 1/8" | 1 1/8" | 9/16" | 120 psi @ 72° F | Triple Bulb | Iron | 3/4"-10 | 0000000 | 00000000 |