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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Flame-Retardant PVDF Pipe Flanges for Chemicals
- For Use With: Chlorine, Salt Water, Solvents
- Temperature Range: 40° to 280° F
- Specifications Met: ASTM D3222, UL 94 V-0
- Pipe Nipples and Pipe: Use Schedule 80 PVDF Plastic
- Fittings: Use Schedule 80 PVDF Plastic
Flanges meet UL 94 V-0 for flame retardance to delay the spread of flames to valuable equipment. They are made of PVDF (polyvinylidene fluoride), which is comparable to Kynar, and has the chemical resistance to stand up to 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 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 D3222 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.
| Pipe Size  | Flanged Connection Surface | Flange OD | For Bolt Dia. | Bolt Hole Dia. | Number of Bolt Holes | Bolt Circle Dia. | Material | Color | Max. Pressure | Each | |
Fixed Flange, Female Threaded × Flanged | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
NPT Threads | |||||||||||
| 1/2 | Flat | 3 1/2" | 1/2" | 5/8" | 4 | 2 5/16" | PVDF Plastic | Red | 150 psi @ 72° F | 00000000 | 0000000 |
| 3/4 | Flat | 3 7/8" | 1/2" | 5/8" | 4 | 2 11/16" | PVDF Plastic | Red | 150 psi @ 72° F | 00000000 | 000000 |
| 1 | Flat | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/32" | PVDF Plastic | Red | 150 psi @ 72° F | 00000000 | 000000 |
| 1 1/2 | Flat | 5" | 1/2" | 5/8" | 4 | 3 3/4" | PVDF Plastic | Red | 150 psi @ 72° F | 00000000 | 000000 |
| 2 | Raised | 6" | 5/8" | 3/4" | 4 | 4 3/4" | PVDF Plastic | Red | 150 psi @ 72° F | 00000000 | 000000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
High-Purity PVDF Pipe Fittings for Corrosive Chemicals
Made of PVDF that’s finished to a 12 Ra smoothness, these fittings handle some of the harshest chemicals without leaching contaminants into your line. They won’t accumulate particles and are easy to clean, thanks to their smoothness. Comparable to Kynar, these fittings handle most organic solvents that would dissolve CPVC, and chlorine or nitric acid that would weaken polypropylene. You can use them at higher temperatures than CPVC and polypropylene. These fittings meet UL 94 V-0 and FM standards for flame retardance. They’re also FDA compliant for direct contact with food, and they meet ASTM requirements for dimensions and tolerances.
Connect them to pipe with socket fusion welding for a strong, permanent bond. Use a socket fusion tool with a heater bushing (sold separately) that matches your pipe size.
Adapter
with Flange
- For Use With: Chlorine, Deionized Water, Hydrochloric Acid, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Solvents
- Temperature Range: -40° to 270° F
- Specifications Met: ASTM D3261, FDA Compliant 21 CFR 177.2510, FM 4910, UL 94 V-0
- Pipe Nipples and Pipe: Use SDR 21 PVDF Plastic
- Flanges: Use Polypropylene Plastic
Stub-end straight adapters connect flanges to pipe. Slide the straight end into a flange and fuse the stub end to the pipe. Since the flange isn’t fused to the pipe, it can be disconnected easily for cleaning and inspecting.
Adapters | Flanges | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Wall Thick. | Material | Color | Max. Pressure | Each | Each | ||
| 1/2 | 0.138" | PVDF Plastic | White | 230 psi @ 72° F | 0000000 | 000000 | 0000000 | 000000 |
| 3/4 | 0.158" | PVDF Plastic | White | 230 psi @ 72° F | 0000000 | 000000 | 0000000 | 00000 |
| 1 | 0.177" | PVDF Plastic | White | 230 psi @ 72° F | 0000000 | 000000 | 0000000 | 00000 |
| 1 1/2 | 0.217" | PVDF Plastic | White | 230 psi @ 72° F | 0000000 | 000000 | 0000000 | 00000 |
| 2 | 0.256" | PVDF Plastic | White | 230 psi @ 72° F | 0000000 | 000000 | 0000000 | 000000 |
- For Use With: Chlorine, Deionized Water, Hydrochloric Acid, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Solvents
- Temperature Range: -40° to 270° F
- Specifications Met: ASTM D3222, FDA Compliant 21 CFR 177.2510, FM 4910, UL 94 V-0
- Seal Material: Viton® Fluoroelastomer Rubber
- Seat Material: PTFE Plastic
Add a ball valve to control the flow in your line.
| Pipe Size | Flow Coefficient (Cv) | Vacuum Rating, in. of Hg | Port Type | End-to-End Lg. | Color | Max. Pressure | Each | |
PVDF Plastic | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2 | 12.5 | 29.92 | Full | 3 13/16" | White | 230 psi @ 72° F | 0000000 | 0000000 |
| 3/4 | 28 | 29.92 | Full | 4 9/32" | White | 230 psi @ 72° F | 0000000 | 000000 |
| 1 | 50.9 | 29.92 | Full | 4 23/32" | White | 230 psi @ 72° F | 0000000 | 000000 |
| 1 1/2 | 150 | 29.92 | Full | 6 1/16" | White | 230 psi @ 72° F | 0000000 | 00000000 |
| 2 | 230 | 29.92 | Full | 6 13/16" | White | 230 psi @ 72° F | 0000000 | 00000000 |
| Each | ||
| 00000000 | 0000000 |
