About Duct Connections
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About Noise, Filtration, and Flow Ratings
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Lockable Breather Vents with Cap
Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering. These breather vents allow you to add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Use them to stop debris from entering your tank. Breather vents mount on top of standard tank openings with included hardware. Padlock is not included.
For technical drawings and 3-D models, click on a part number.
Material | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Max. Temp., °F | Ht. | Dia. | For Use With | Cap | Screen | For Max. Padlock Shackle Dia. | Each | |
NPT Male | |||||||||
| 2 | 200° | 4 1/2" | 5 5/8" | Air, Oil, Water | Aluminum | Stainless Steel | 3/8" | 0000000 | 000000 |
Washdown Weather-Resistant Breather Vents
These breather vents are rated NEMA 6 to withstand periodic submersion in water. Install them in enclosures to stop the buildup of pressure and vacuum and to prevent debris from entering equipment. Breather vents can be used with enclosures that are rated NEMA 4, 12, and 13 for washdown environments and splashing oil and coolant.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | O-Ring Material | Removes Particle Size Down To, microns | Each | |
Threaded UNF Male | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Aluminum Body and Fitting | |||||||||
| 10-32 | 1.4 | 158° | 1/4" | 3/8" | Air | EPDM Rubber | 3 | 0000000 | 000000 |
Threaded Metric Male | |||||||||
Aluminum Body and Fitting | |||||||||
| M8 | 1.4 | 158° | 9/16" | 9/16" | Air | EPDM Rubber | 3 | 0000000 | 00000 |
| M20 | 1.4 | 158° | 1" | 1 1/8" | Air | EPDM Rubber | 1 | 0000000 | 000000 |
Gas Chimney Vents and Fittings
For use with gas-fired equipment, such as boilers and furnaces, these vent pipes and fittings withstand temperatures up to 400° F. Also known as type B gas vents.
To join pipes and connectors, insert a male end into a female end and secure with the included locking band.
For technical drawings and 3-D models, click on a part number.
Chimney Vent Caps
Cover chimneys to reduce downdrafts and prevent obstructions from entering.
For technical drawings and 3-D models, click on a part number.
Aluminum | |||||||
|---|---|---|---|---|---|---|---|
| For Duct Dia. | Ht. | Dia. | Gauge | Connection Type | Specifications Met | Each | |
For Round Duct | |||||||
| 2 7/8"-4 7/8" | 4 1/2" | 6 5/8" | 22 | Press Fit | UL Listed | 0000000 | 000000 |
| 4 7/8"-6 7/8" | 4 3/4" | 9 1/2" | 22 | Press Fit | UL Listed | 0000000 | 00000 |
| 6 7/8"-8 7/8" | 5 7/8" | 11 5/8" | 22 | Press Fit | UL Listed | 0000000 | 000000 |
| 8 7/8"-10 7/8" | 6 1/2" | 12 3/4" | 22 | Press Fit | UL Listed | 0000000 | 000000 |
Standard Duct and Fittings
No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.
Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
EMI/RFI Shielding Enclosure Vents
These conductive aluminum screens block electromagnetic interference (EMI) and radio frequency interference (RFI) to prevent electrical problems such as radio static and faulty signals. Made of mesh, they let air flow through, so the pressure in your enclosure stays constant as temperatures fluctuate.
Screw through the vent frame to mount on the surface of your enclosure. A shielded foam gasket fills the gap between the enclosure and the vent.
Also known as attenuation, interference reduction at frequency measures how much interference is blocked. These vents have high attenuation and work for most applications.
For technical drawings and 3-D models, click on a part number.
For Opening | Overall | Mounting Holes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Width | Height | Width | Height | Depth | Interference Reduction @ Frequency | Frame Material | Screen Material | Mounting Fasteners Included | Number of | Diameter | Each | |
| 2" | 2" | 3" | 3" | 3/4" | 52 dB @ 1 GHz | Chromate-Coated Aluminum | Chromate-Coated Aluminum | No | 4 | 1/4" | 0000000 | 000000 |
| 3" | 3" | 4" | 4" | 3/4" | 52 dB @ 1 GHz | Chromate-Coated Aluminum | Chromate-Coated Aluminum | No | 4 | 1/4" | 0000000 | 000000 |
| 4" | 4" | 5" | 5" | 3/4" | 52 dB @ 1 GHz | Chromate-Coated Aluminum | Chromate-Coated Aluminum | No | 6 | 1/4" | 0000000 | 000000 |
| 5" | 5" | 6" | 6" | 3/4" | 52 dB @ 1 GHz | Chromate-Coated Aluminum | Chromate-Coated Aluminum | No | 8 | 1/4" | 0000000 | 000000 |
| 6" | 4" | 7" | 5" | 3/4" | 52 dB @ 1 GHz | Chromate-Coated Aluminum | Chromate-Coated Aluminum | No | 6 | 1/4" | 0000000 | 000000 |
Diesel Fuel Tank Caps
Often used with trailers, compressors, and other equipment tanks, these caps meet Department of Transportation requirements. Caps have fusible plugs that will melt when the outside environment reaches their opening temperature.
Cap with vent will automatically open when the internal pressure reaches between 6.5 psi to 8.5 psi to relieve pressure.
| Chain Lg. | Bail Lg. | Seal Material | Pipe Size | Gender | Opening Temp., °F | Specifications Met | Message | Each | |
Aluminum | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Cap with Vent | |||||||||
| 6" | 4 1/2" | Buna-N Rubber | 2 NPSH | Female | 255° | D.O.T. 49 CFR 393.67 | Diesel Fuel Only | 000000 | 000000 |