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Breather Vents
Protect against excess vacuum and pressure in cylinders, gear boxes, enclosures, manifolds, and tanks. You can also use these breather vents to block debris from entering equipment.
Breather vents with splash guard are good for containers that are often filled and drained; they have a guard that prevents oil from splashing out of the vent hole.
For technical drawings and 3-D models, click on a part number.
| Style | Pipe Size  | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Features | Each | |
NPT Male | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Body and Fitting Nylon Plastic Fitting | |||||||||||
| C | 1/4 | Not Rated | Not Rated | 210° | 1 9/16" | 1 11/16" | Air, Oil | 40 | Splash Guard | 0000000 | 00000 |
| C | 3/8 | Not Rated | Not Rated | 210° | 1 3/4" | 1 11/16" | Air, Oil | 40 | Splash Guard | 0000000 | 0000 |
| C | 1/2 | Not Rated | Not Rated | 210° | 1 13/16" | 1 11/16" | Air, Oil | 40 | Splash Guard | 0000000 | 0000 |
| C | 3/4 | Not Rated | Not Rated | 210° | 1 13/16" | 1 11/16" | Air, Oil | 40 | Splash Guard | 0000000 | 0000 |
Breather Vents with Cap
Add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Breather vents stop debris from entering your tank. Mount them on top of standard tank openings with included hardware.
For technical drawings and 3-D models, click on a part number.
| For Opening Dia. | Max. Flow Rate | Max. Temp., °F | Ht. | For Use With | Screen Material | Mount Type | Number of Bolt Holes | Bolts Included | Removes Particle Size Down To, microns | Each | |
Nylon Plastic Body | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Cap | |||||||||||
| 2" | Not Rated | 195° | 5 3/4" | Air, Oil | Nylon Plastic | Flange | 6 | Yes | 40 | 0000000 | 000000 |
Vents | Replacement Screens | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Opening Ht. | For Opening Wd. | Max. Flow Rate, gpm | Max. Temp., °F | Ht. | Wd. | Dp. | For Use With | Screen Material | Mount Type | Number of Bolt Holes | Bolts Included | Removes Particle Size Down To, microns | Each | Each | ||
Nylon Plastic Body | ||||||||||||||||
Steel Cap | ||||||||||||||||
| 3 1/2" | 3" | 115 | Not Rated | 6 1/8" | 4 5/8" | 4" | Air, Oil | 304 Stainless Steel | Flange | 7 | Yes | 10 | 00000000 | 000000 | 0000000 | 00000 |
| 3 1/2" | 3" | 192 | Not Rated | 6 1/8" | 4 5/8" | 4" | Air, Oil | 304 Stainless Steel | Flange | 7 | Yes | 40 | 00000000 | 00000 | 0000000 | 0000 |
Corrosion-Resistant Breather Vents
These breather vents withstand corrosion in damp environments. Use them to prevent excess vacuum and pressure in cylinders, gear boxes, and tanks and to block debris from entering equipment.
Polyethylene breather vents can be cleaned with mineral spirits.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Each | |
NPT Male | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Polyethylene Plastic Body and Fitting | |||||||||
| 1/8 | 1 scfm @ 100 psi | 100 | 150° | 7/16" | 1/2" | Air, Inert Gas | 100 | 0000000 | 00000 |
| 1/4 | 3 scfm @ 100 psi | 100 | 150° | 1/2" | 11/16" | Air, Inert Gas | 100 | 0000000 | 0000 |
| 3/8 | 9 scfm @ 100 psi | 100 | 150° | 11/16" | 15/16" | Air, Inert Gas | 100 | 0000000 | 0000 |
| 1/2 | 10 scfm @ 100 psi | 100 | 150° | 11/16" | 15/16" | Air, Inert Gas | 100 | 0000000 | 0000 |
| 3/4 | 20 scfm @ 100 psi | 100 | 150° | 1 1/8" | 1 1/2" | Air, Inert Gas | 100 | 0000000 | 0000 |
| 1 | 22 scfm @ 100 psi | 100 | 150° | 1 3/8" | 1 7/8" | Air, Inert Gas | 100 | 0000000 | 0000 |
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.
Vents with barbed connections fit unthreaded openings and are held in place by friction.
For technical drawings and 3-D models, click on a part number.
| Thread Size | For Hole Size | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | O-Ring Material | Removes Particle Size Down To, microns | Features | Each | |
Threaded Metric Male | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Body and Fitting | |||||||||||
| M3 | __ | 1.4 | 158° | 3/8" | 5/16" | Air | __ | 3 | __ | 0000000 | 000000 |
Polycarbonate Plastic Body and Fitting | |||||||||||
| M16 | __ | 1.4 | 158° | 15/16" | 1 1/16" | Air | Buna-N Rubber | 3 | Mounting Nut | 0000000 | 00000 |
Barbed Male | |||||||||||
ABS Plastic Body and Fitting | |||||||||||
| __ | 21/64" | 4 | 158° | 9/16" | 7/8" | Air | Silicone Rubber | 1 | __ | 0000000 | 00000 |
Moisture-Eliminating Breather Vents
Keep moisture, dirt, and debris from entering your oil reservoirs. The silica gel inside these breather vents absorbs moisture from the air, preventing rust from forming inside your tanks. The gel changes from blue to pink as it becomes saturated, letting you know it needs to be replaced. A second filter blocks dust and other particles from getting inside. These breather vents allow air to flow in and out of your lubrication system, keeping excess vacuum or pressure from building up in cylinders, gear boxes, and tanks.
Breather vents with a plastic body are clear, so a quick glance will tell you if the gel is saturated. Unlike steel versions, which can be rebuilt, the entire unit must be replaced when fresh gel is needed. For washdown environments, select breather vents with check valves. These valves allow air to flow in and out, but close when liquids try to enter.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | For Tank Capacity, gal. | Max. Flow Rate | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Each | |
Nylon and Polycarbonate Plastic Body and Nylon Plastic Fitting | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8 | 1-2 | 4.5 scfm @ 1 psi | 200° | 4" | 2 1/2" | Air, Inert Gas | 3 | 0000000 | 000000 |
| 3/8 | 1-5 | 4 scfm @ 1 psi | 200° | 5 3/8" | 2 1/2" | Air, Inert Gas | 3 | 0000000 | 00000 |
| 1 | 5-200 | 16 scfm @ 1 psi | 200° | 6 1/8" | 4 1/8" | Air, Inert Gas | 3 | 0000000 | 00000 |
| 1 | 5-350 | 16 scfm @ 1 psi | 200° | 8 1/8" | 4 1/8" | Air, Inert Gas | 3 | 0000000 | 000000 |
| 1 | 5-500 | 16 scfm @ 1 psi | 200° | 10 1/8" | 4 1/8" | Air, Inert Gas | 3 | 0000000 | 000000 |
| Pipe Size | For Tank Capacity, gal. | Max. Flow Rate | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Each | |
Nylon and Polycarbonate Plastic Body and Nylon Plastic Fitting | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1-400 | 27 scfm @ 1 psi | 200° | 4 11/16" | 5 11/16" | Air, Inert Gas | 3 | 0000000 | 0000000 |
| 1 | 1-600 | 26 scfm @ 1 psi | 200° | 6 7/16" | 5 11/16" | Air, Inert Gas | 3 | 0000000 | 000000 |
| 1 | 1-800 | 25 scfm @ 1 psi | 200° | 8 1/4" | 5 11/16" | Air, Inert Gas | 3 | 0000000 | 000000 |
| 1 | 1-1,000 | 24 scfm @ 1 psi | 200° | 10" | 5 11/16" | Air, Inert Gas | 3 | 0000000 | 000000 |
Hazardous Location Drain Vents
Safe for use around hazardous gasses and dust, these vents maintain steady pressure and prevent moisture buildup from temperature changes inside enclosures. They allow air to flow through the enclosures while protecting the contents from washdowns, dirt, and weather. Install these vents at the lowest point on an enclosure, so moisture can drip out.
Increased-safety drains keep sparks, high temperatures, or current creepage inside an enclosure, so they won’t ignite flammable gasses and dust.
Glass-filled nylon drains are lightweight yet durable. They’re good for most areas.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Thread Pitch, mm | Height | Environmental Rating | Nut Material | O-Ring Material | Color | Maximum Temperature, °F | Specifications Met | Each | |
Increased-Safety Drains | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Glass-Filled Nylon Plastic | ||||||||||
| M20 | 1.5 | 1 1/4" | NEMA 4X; IP66; NEC Class I Division 2 Groups A, B, C, D | Brass | Buna-N Rubber | Black | 185° | ATEX II 2DG IECEx Ex tb IIIC Db IECEx Exe II Gb | 0000000 | 000000 |