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UV-Resistant Polypropylene Pipe Flanges for Chemicals
- For Use With: Acetic Acid (5%), Calcium Chloride, Hydrochloric Acid (10%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide, Sulfuric Acid (30%), Water
- Temperature Range: See Table
- Pipe Nipples and Pipe: Use Schedule 80 Polypropylene Plastic
- Fittings: Use Schedule 80 Polypropylene Plastic
Use these polypropylene flanges in outdoor environments—they resist the damaging effects of ultraviolet light. Flanges have the chemical resistance to stand up to a wide variety of acids, solvents, and other harsh substances. Also known as Pressure Class 150 flanges, they have thick, strong walls for heavy duty chemical processing 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 pipe 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.
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 | Flanged Connection Surface | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Temperature Range, °F | Each | |
NPT Threads | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
1/2 | Flat | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
3/4 | Flat | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 00000 |
1 | Flat | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 000000000 | 00000 |
1 1/4 | Flat | 4 1/2" | 1/2" | 5/8" | 4 | 3 1/2" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
1 1/2 | Flat | 5" | 1/2" | 5/8" | 4 | 3 7/8" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 000000000 | 00000 |
2 | Flat | 6" | 5/8" | 3/4" | 4 | 4 3/4" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 000000000 | 00000 |
3 | Flat | 7 1/2" | 5/8" | 3/4" | 4 | 6" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 000000000 | 00000 |
4 | Flat | 9" | 5/8" | 3/4" | 8 | 7 1/2" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 000000000 | 000000 |
Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |




Cap flanges are also known as blind flanges.
Pipe Size | Flanged Connection Surface | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Temperature Range, °F | Each | |
1/2 | Raised | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 0000000 |
3/4 | Raised | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
1 | Raised | 4 1/4" | 1/2" | 5/8" | 4 | 3" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
1 1/4 | Raised | 4 1/2" | 1/2" | 5/8" | 4 | 3 1/2" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
1 1/2 | Raised | 5" | 1/2" | 5/8" | 4 | 3 7/8" | Polypropylene Plastic | Black | Not Rated | 0° to 180° | 000000000 | 000000 |
2 | Flat | 6" | 5/8" | 3/4" | 4 | 4 3/4" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 00000000 | 00000 |
3 | Flat | 7 1/2" | 5/8" | 3/4" | 4 | 6" | Polypropylene Plastic | Black | Not Rated | 0° to 150° | 00000000 | 00000 |
4 | Raised | 8 7/8" | 5/8" | 3/4" | 8 | 7 1/2" | Polypropylene Plastic | Black | Not Rated | 32° to 120° | 00000000 | 000000 |
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 | 0000000 |
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 | 000000 |

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 |
Fiberglass Pipe Flanges for Corrosive Chemicals
- For Use With: Acetic Acid (75%), Alcohol, Calcium Chloride, Chlorine, Fuel Oil, Gasoline, Hydrochloric Acid (37%), Nitric Acid (10%), Oil, Phosphoric Acid, Salt Water (30%), Sodium Hydroxide (50%), Solvents, Sulfuric Acid (70%), Water
- Temperature Range: 32° to 200° F
- Specifications Met: ASTM D4024
Flanges have excellent corrosion resistance to handle a wide range of acids and other highly-corrosive chemicals. Use in metal surface treating applications, plating solution lines, and other chemical process applications. They are reinforced with fiberglass layers for better strength and durability than any of our other pipe flanges for chemicals. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges meet ASTM D4024 specifications and testing requirements for product dimensions, performance, and material quality.
To connect flanges to pipe, first sand the inside of the flange and the end of the pipe to remove the surface finish. Next, mix the adhesive (sold separately) until the color is uniform with no streaks. Apply a thin layer of mixed adhesive to the sanded area of the pipe, approximately 1/8” thick. Repeat this process with the inside of the flange, applying a layer approximately 1/16” thick. After sealant has been applied, push the flange onto the pipe until it is fully engaged. Make sure you align the bolt holes prior to installing to minimize rotation after the flange is installed. Finally, use the adhesive-curing heat cable (sold separately) to cure the adhesive. Wrap the tape around the pipe and flange at the joint, taking care to not overlap the tape. Once you have waited the full cure time, the pipe and flange will be ready to use.
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 | Socket Dp. | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Each | |
1 1/2 | 1 3/8" | 5" | 1/2" | 5/8" | 4 | 3 7/8" | Fiberglass | Black | 300 psi @ 72° F | 0000000 | 0000000 |
2 | 1 3/4" | 6" | 5/8" | 3/4" | 4 | 4 3/4" | Fiberglass | Black | 250 psi @ 72° F | 0000000 | 000000 |
3 | 2" | 7 1/2" | 5/8" | 3/4" | 4 | 6" | Fiberglass | Black | 250 psi @ 72° F | 0000000 | 000000 |
4 | 2 1/2" | 9" | 5/8" | 3/4" | 8 | 7 1/2" | Fiberglass | Black | 150 psi @ 72° F | 0000000 | 000000 |
Pipe Cement (11.8-fl. oz. Can) | 0000000 | Each | 000000 |

Cap flanges are also known as blind flanges.
Pipe Size | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Each | |
1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | Fiberglass | Black | 300 psi @ 72° F | 0000000 | 0000000 |
2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | Fiberglass | Black | 250 psi @ 72° F | 0000000 | 000000 |
3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | Fiberglass | Black | 250 psi @ 72° F | 0000000 | 000000 |
4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | Fiberglass | Black | 150 psi @ 72° F | 0000000 | 000000 |
Pipe Cement (11.8-fl. oz. Can) | 0000000 | Each | 000000 |

Voltage | Max. Heat Output, °F | Lg. | Wd. | Thick. | Plug Type | Cord Lg. | Each | |
120V AC | 270° | 6 ft. | 1" | 1/8" | Two Prong | 6 ft. | 0000000 | 0000000 |
Drain, Waste, and Vent ABS Pipe Flanges for Chemicals
- For Use With: Sodium Hydroxide
- Max. Temperature: 180° F
- Specifications Met: ASTM D2661, ASTM D3311, ASTM D3965, ASTM F1498
- Pipe NIpples and Pipe: Use Schedule 40 ABS Plastic
- Fittings: Use Schedule 40 ABS Plastic
These Schedule 40 flanges are an economical choice for gravity-flow chemical waste systems. Flanges are ABS plastic, which has excellent strength and impact resistance and good chemical resistance. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. They have socket-connect ends that attach to unthreaded pipe or another socket-connect fitting with ABS cement (also known as solvent weld). They meet ASTM D2661, ASTM D3311, ASTM D3965, and ASTM F1498 specifications and testing requirements for material quality and product dimensions.
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.
Minimal-Spill Push-and-Turn Hose Couplings for Chemicals

Quickly connect and disconnect hose lines used with a variety of chemicals, from adhesives to isopropyl alcohol and ink. Any part of these couplings that contacts fluid is made from 316 stainless steel, C-276 Hastelloy, PTFE, or fluoroelastomer to withstand the chemicals in your line. Tough enough to handle frequent use, these couplings are designed to be virtually spill free. Also known as dry disconnects and double-shut off couplings, both the plug and the socket have a shut-off valve that stops the flow of liquids when they’re separated. To connect, push the plug into the socket and lock with a quarter turn. The socket swivels, so you won’t have to twist your hose to attach the plug. It also has a rubber lip and large handles to prevent damage if it’s dropped.
A complete coupling consists of a plug and a socket (both sold separately). They’re compatible with MannTek, Avery Hardoll, Todo-matic, and other dry-disconnect couplings that meet NATO standard STANAG 3756.
316 stainless steel couplings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With:
Aluminum: Acetone, Adhesives, Benzene, Boric Acid, Butyl Alcohol, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydraulic Fluid, Ink, Isopropyl Alcohol, Mineral Oil, Mineral Spirits, Varnish, Vegetable Oil
316 Stainless Steel: Acetone, Adhesives, Benzene, Boric Acid, Butyl Alcohol, Citric Acid, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydraulic Fluid, Ink, Isopropyl Alcohol, Mineral Oil, Mineral Spirits, Nitric Acid, Sodium Hydroxide, Varnish, Vegetable Oil - Maximum Pressure:
Aluminum: 230 psi @ 72° F
316 Stainless Steel: 360 psi @ 72° F - Temperature Range: -15° to 400° F

- For Use With: Acetone, Adhesives, Benzene, Boric Acid, Butyl Alcohol, Citric Acid, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydraulic Fluid, Ink, Isopropyl Alcohol, Mineral Oil, Mineral Spirits, Nitric Acid, Sodium Hydroxide, Varnish, Vegetable Oil
- Maximum Pressure: 360 psi @ 72° F
- Temperature Range: -15° to 400° F