About Backflow-Prevention Valves
More
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.
More
How to 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.
More
Low-Pressure Clamp-On Connectors for Chemical Waste
- For Use With: Acetone, Alcohol, Ammonia, Bleach, Calcium Chloride, Chlorine, Citric Acid, Fluoboric Acid, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Carbonate, Sodium Chloride, Sodium Hydroxide, Sulfuric Acid (30%), Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM C1173
- For Pipe Material: See table
With an FEP sleeve and PTFE sealing tape, these connectors withstand chemicals better than rubber connectors. Use them for joining low-pressure chemical waste drainpipe and fittings or transitioning between different chemical piping. The connectors are 316 stainless steel for excellent corrosion resistance. They stand up to wet environments, just like 304 stainless steel, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
To install, chamfer and deburr both ends of the pipe you need to join. Mark each pipe adjacent to the connector bands and apply 10 layers of the PTFE tape directly over each line. Doing this creates a seal between the sleeve and the pipe for extra leak protection. Then, center the FEP sleeve over the tape and use a heat gun to shrink the sleeve onto the pipe. Next, center the connector and tighten the clamps to 60 inch-lbs. to form a tight seal. Finally, test for leaks.
For technical drawings and 3-D models, click on a part number.
| For Pipe OD | For Pipe Size  | Lg. | Max. Pressure | Material | Sleeve Material | For Pipe Material | Includes | Each | |
| 1.7"-2.05" | 1 1/2 | 2" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 0000000 |
| 2.1"-2.6" | 2 | 3" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 2.6"-3.1" | 2 1/2 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 3.15"-3 1/2" | 3 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 4.3"-5.2" | 4 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 6.2"-7" | 6 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 8.35"-9.2" | 8 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
Compression Fittings for Plastic Tubing—Chemicals
- For Use With: PFA Plastic: Hydrochloric Acid, Sulfuric Acid
PTFE Plastic: Alcohol, Ammonia, Benzoic Acid, Bleach, Bromine, Coolant, Fluoboric Acid, Hydrochloric Acid, Hydrofluoric Acid, Nitric Acid, Organic Solvents, Sodium Carbonate, Sulfuric Acid - Temperature Range: PFA Plastic: 0° to 350° F
PTFE Plastic: -40° to 185° F - Tubing: PFA Plastic: Use with hard (Durometer 50D-65D) PFA or PTFE plastic
PTFE Plastic: Use with hard (Durometer 60D) PFA or PTFE plastic
A sleeve (ferrule) compresses the tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. Fittings that include a gripper sleeve on the tubing create an even tighter seal.
PTFE fittings are highly resistant to most acids, alcohols, detergents, and solvents. They’re made by machining. Their nut is made of PVDF, which is resistant to halogens such as chlorine and bromine, strong acids such as hydrofluoric and nitric acids, and organic solvents.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 4mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
| 6mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 6mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 8mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 10mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 10mm | 3/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 12mm | 3/8 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
| 12mm | 1/2 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 10mm | 3/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 0000000 |
Quick-Disconnect Couplings for Plastic and Rubber Tubing—Chemicals
- For Use With: Ammonia, Ethanol, Phosphoric Acid (70%), Sodium Carbonate
- Temperature Range: 32° to 160° F
Couplings consist of a plug and a socket (sold separately) that join with a latch, so you can frequently connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch on the socket and remove the plug. Plugs and sockets are polypropylene, which has excellent chemical, impact, and abrasion resistance.
Plugs and sockets with shut-off have a valve to stop the flow when the coupling is separated so fluid won’t spill from your line.
Note: For a complete coupling, order a plug and a socket with the same coupling size.
For technical drawings and 3-D models, click on a part number.
| Coupling Size | Plug OD | Pipe Size | Material | Color | Max. Pressure | Each | |
Open Flow | |||||||
|---|---|---|---|---|---|---|---|
NPT Threads | |||||||
| 1/8 | 5/16" | 1/8 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 3/8 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 1/2 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
With Shut-Off | |||||||
NPT Threads | |||||||
| 1/8 | 5/16" | 1/8 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 3/8 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 1/2 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
| Coupling Size | For Plug OD | Pipe Size | Material | Color | Max. Pressure | Each | |
Open Flow | |||||||
|---|---|---|---|---|---|---|---|
NPT Threads | |||||||
| 1/8 | 5/16" | 1/8 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 000000 |
| 1/4 | 7/16" | 1/4 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 3/8 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 1/2 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
With Shut-Off | |||||||
NPT Threads | |||||||
| 1/8 | 5/16" | 1/8 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 1/8 | 5/16" | 1/4 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8 | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 3/8 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
| 3/8 | 3/4" | 1/2 | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 |
High-Pressure Nipples for Compressed Gas
Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut (sold separately) so you can make a threaded connection.
316 stainless steel nipples have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Maximum Temperature: 120° F
Regulator Connection | ||||||
|---|---|---|---|---|---|---|
| For Number (Max. Pressure) | Pipe Size | Thread Type | Lg. | For Use With | Each | |
316 Stainless Steel—Tighten With Wrench | ||||||
| CGA 705 (3,000 psi @ 72° F) | 1/4 | NPT | 2 1/2" | Ammonia | 000000000 | 000000 |
- Maximum Pressure: See table
- Maximum Temperature: 120° F
| Number | Gender | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| CGA 705 | Female | 1.125"-14 | UNS | Right Hand | 3,000 psi @ 72° F | Ammonia | 000000000 | 000000 |
Flow-Control Orifices for Chemicals
- For Use With: Air, Ammonia, Sodium Hydroxide, Beverage, Carbon Dioxide, Diesel Fuel, Water, Oil, Ethylene Glycol, Food, Hydrochloric Acid, Kerosene, Liquid Carbon Dioxide, Methanol, Soap Solutions, Methyl Ethyl Ketone, Mineral Spirits, Natural Gas, Oxygen, Nitric Acid
- Max. Pressure: 120 psi @ 75° F
- Temperature Range: 40° to 140° F
Made of PVC, these orifices have excellent resistance to a wide range of corrosive chemicals. Also known as flow restrictors and precision orifice valves, they are used to throttle, vent, bleed, or regulate the flow of liquids and gases. They automatically adjust to changing inlet pressure to maintain consistent outlet flow.
For technical drawings and 3-D models, click on a part number.
Pipeline Fluid Blockers
Also known as pipe blinds, these fluid blockers fit between two flanges to stop flow, so you can work downstream without draining the system.
Paddle blinds slip between the flanges to temporarily block flow.
304 stainless steel blinds resist corrosion better than steel blinds.
For technical drawings and 3-D models, click on a part number.
Handle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Pipe Size | OD | For Orifice Flange ANSI Class | Max. Pressure | Thick. | Lg. | Wd. | Temp. Range, °F | Specifications Met | Each | |
304 Stainless Steel | ||||||||||
| 8 | 11" | 150 | 150 psi @ 70° F | 1/4" | 7" | 1" | -100° to 400° | __ | 0000000 | 0000000 |
| 10 | 13 3/8" | 150 | 150 psi @ 70° F | 3/8" | 7" | 1 1/2" | -100° to 400° | __ | 0000000 | 000000 |
| 12 | 16 1/8" | 150 | 150 psi @ 70° F | 3/8" | 7" | 1 1/2" | -100° to 400° | __ | 0000000 | 000000 |
PTFE-Coated 304 Stainless Steel | ||||||||||
| 1/2 | 1 7/8" | 150 | 150 psi @ 250° F | 1/8" | 2" | 3/4" | -100° to 400° | ASTM D4894, FDA Compliant 21 CFR 177.1550 | 0000000 | 00000 |
| 3/4 | 2 1/4" | 150 | 150 psi @ 250° F | 1/8" | 2" | 3/4" | -100° to 400° | ASTM D4894, FDA Compliant 21 CFR 177.1550 | 0000000 | 00000 |