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Automatic-Drain Compressed Air Separators



A float-operated drain valve on these separators automatically opens when the bowl begins to fill. The first step in water removal, use one of these separators to remove the large amount of water as compressed air cools, preventing equipment damage and wear caused by moisture. Install in your air line after compressors and aftercoolers.
Separators with a sight glass allow you to see inside the bowl to monitor contents.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Overall | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Connection | Pipe Size | Connection | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Wd. | Dp. | Each | |
Aluminum Housing | |||||||||||
3/4 | NPT Female | 3/4 | NPT Male | 50 scfm @ 100 psi | 150 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 0000000 |
3/4 | NPT Female | 3/4 | NPT Male | 50 scfm @ 100 psi | 300 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 000000 |
1 | NPT Female | 1 | NPT Male | 100 scfm @ 100 psi | 150 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 000000 |
1 | NPT Female | 1 | NPT Male | 100 scfm @ 100 psi | 300 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 000000 |
2 | NPT Female | 2 | NPT Male | 300 scfm @ 100 psi | 150 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 000000 |
2 | NPT Female | 2 | NPT Male | 300 scfm @ 100 psi | 300 | 100° | 9" | 5 1/8" | 10 5/8" | 0000000 | 000000 |
Aluminum Housing with Sight Glass | |||||||||||
1/8 | NPT Female | 1/8 | NPT Female | 10 scfm @ 100 psi | 145 | 140° | 6 3/4" | 2 1/2" | 2 1/2" | 0000000 | 00000 |
1/4 | NPT Female | 1/4 | NPT Female | 26 scfm @ 100 psi | 145 | 140° | 7 3/8" | 3" | 3" | 0000000 | 000000 |
3/8 | NPT Female | 3/8 | NPT Female | 53 scfm @ 100 psi | 145 | 140° | 8 5/8" | 3 5/8" | 3 1/2" | 0000000 | 000000 |
1/2 | NPT Female | 1/2 | NPT Female | 77 scfm @ 100 psi | 145 | 140° | 9 1/2" | 4 1/4" | 4 1/8" | 0000000 | 000000 |
3/4 | NPT Female | 3/4 | NPT Female | 77 scfm @ 100 psi | 145 | 140° | 9" | 4 1/8" | 4 3/8" | 0000000 | 000000 |
1 | NPT Female | 1 | NPT Female | 127 scfm @ 100 psi | 145 | 140° | 10 1/4" | 4 3/4" | 5" | 0000000 | 000000 |
Zinc Housing | |||||||||||
1/4 | NPT Female | 1/4 | NPT Female | 25 scfm @ 100 psi | 200 | 150° | 6 1/2" | 3" | 2 5/8" | 00000000 | 000000 |
3/8 | NPT Female | 3/8 | NPT Female | 50 scfm @ 100 psi | 200 | 150° | 7 3/8" | 3 3/8" | 3" | 00000000 | 000000 |
1/2 | NPT Female | 1/2 | NPT Female | 50 scfm @ 100 psi | 200 | 150° | 7 3/8" | 3 3/8" | 3" | 00000000 | 000000 |
3/4 | NPT Female | 3/4 | NPT Female | 100 scfm @ 100 psi | 200 | 150° | 10" | 4 5/8" | 4 3/4" | 00000000 | 000000 |
1 | NPT Female | 1 | NPT Female | 120 scfm @ 100 psi | 200 | 150° | 10" | 4 5/8" | 4 3/4" | 00000000 | 000000 |
High-Flow Compressed Air Separators

These separators have higher flow rates compared to our other compressed air separators. Prevent equipment damage and wear caused by moisture in your compressed air supply. The first step in water removal, use one of these separators to remove the large amount of water created as compressed air cools. A float-operated drain valve automatically opens when the bowl begins to fill. Install separators in your air line after compressors and aftercoolers..
Pipe Size | Overall | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Connections | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Wd. | Dp. | Each | |
Aluminum Housing | ||||||||||
3/4 | 3/4 | NPT Female | 233 scfm @ 100 psi | 232 | 149° | 12" | 4 3/4" | 4 1/2" | 0000000 | 0000000 |
1 | 1 | NPT Female | 233 scfm @ 100 psi | 232 | 149° | 11" | 4 3/4" | 2 1/4" | 00000000 | 000000 |
1 1/2 | 1 1/2 | NPT Female | 742 scfm @ 100 psi | 232 | 149° | 17 3/8" | 6 1/2" | 3 1/8" | 00000000 | 000000 |
2 | 2 | NPT Female | 742 scfm @ 100 psi | 232 | 149° | 17 3/8" | 6 1/2" | 3 1/8" | 00000000 | 000000 |
3 | 3 | NPT Female | 1,695 scfm @ 100 psi | 232 | 149° | 20 3/8" | 7 5/8" | 3 5/8" | 00000000 | 00000000 |
Compressed Air Separators for Oil Removal
In addition to removing large amounts of water, these separators also remove particles and oil droplets. Place them after your compressor and aftercooler, or at the point of use in applications that don't require an aftercooler. They have an automatic drain to discharge the moisture.
For technical drawings and 3-D models, click on a part number.

Separators | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Replacement Filter Elements | Replacement Pressure Gauges | Replacement Automatic Drains | |||||||||||||
Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Removes Particle Size Down To, microns | Removes Oil Content Down To, ppm | Ht. | Wd. | Dp. | Each | Each | Each | Each | ||||
1/8 | 1/8 | 11 scfm @ 100 psi | 145 | 140° | 3 | 5 | 6 7/8" | 2 1/2" | 2 3/4" | 0000000 | 0000000 | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
1/4 | 1/4 | 26 scfm @ 100 psi | 145 | 140° | 3 | 5 | 7 3/8" | 3" | 3 1/4" | 0000000 | 000000 | 0000000 | 00000 | 000000 | 00 | 000000 | 00 |
3/8 | 3/8 | 20 scfm @ 100 psi | 250 | 140° | 3 | 5 | 9 1/8" | 4 1/8" | 4 1/8" | 0000000 | 000000 | 000000 | 000000 | 0000000 | 000000 | 0000000 | 0000000 |
3/8 | 3/8 | 35 scfm @ 100 psi | 250 | 140° | 3 | 5 | 11 1/8" | 4 1/8" | 4 1/8" | 0000000 | 000000 | 000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
1/2 | 1/2 | 20 scfm @ 100 psi | 250 | 140° | 3 | 5 | 9 1/8" | 4 1/8" | 4 1/8" | 0000000 | 000000 | 000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
1/2 | 1/2 | 35 scfm @ 100 psi | 250 | 140° | 3 | 5 | 11 1/8" | 4 1/8" | 4 1/8" | 0000000 | 000000 | 000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
1/2 | 1/2 | 60 scfm @ 100 psi | 250 | 140° | 3 | 5 | 13 3/8" | 4 1/8" | 4 1/8" | 0000000 | 000000 | 000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
3/4 | 3/4 | 100 scfm @ 100 psi | 250 | 140° | 3 | 5 | 15 5/8" | 5 1/4" | 5 1/4" | 0000000 | 000000 | 000000 | 000000 | 000000 | 000000 | 0000000 | 000000 |
1 | 1 | 100 scfm @ 100 psi | 250 | 140° | 3 | 5 | 15 5/8" | 5 1/4" | 5 1/4" | 0000000 | 000000 | 000000 | 000000 | 000000 | 000000 | 0000000 | 000000 |
Compressed Air Condensate Separators


When water is condensed out of a compressed air system, it contains oil from the compressor that makes disposal difficult. These separators use two-stage filtration to reduce oil content to below 20 parts per million. Check local codes for disposal requirements. The primary filter removes dirt, sludge, and most of the oil. The secondary filter removes the rest of the oil. Filters remove many synthetic lubricants that can be difficult to remove with other separators. They come with a sticker that indicates when they need to be serviced or replaced.
Separator rated to 60 scfm @ 100 psi is for one-time-use. It is compact and can be mounted to a wall or cabinet with the included brackets.
Separators rated to 120 and 360 scfm @ 100 psi have replaceable filter bags. They have a port for sampling water without disconnecting the outlet piping. Connect up to four compressed air components, such as aftercoolers, separators, and drain valves.
Replacement kits come with a primary and secondary filter bag as well as a new service indicator sticker.
Separators | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Replacement Kits | ||||||||||||
Pipe Size | For Tube OD | Pipe Size | For Tube OD | Connections | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Removes Oil Content Down To, ppm | Ht. | Wd. | Dp. | Each | Each | ||
__ | 1/4" | __ | 3/8" | __ | 60 scfm @ 100 psi | 232 | 110° | 5 | 9 3/8" | 5 1/2" | 5 1/2" | 0000000 | 0000000 | 000000 | 00 |
1/2 | __ | 1/2 | __ | NPT Female | 120 scfm @ 100 psi | 232 | 110° | 5 | 19 5/8" | 8 1/2" | 10 1/8" | 0000000 | 000000 | 0000000 | 0000000 |
1/2 | __ | 3/4 | __ | NPT Female | 360 scfm @ 100 psi | 232 | 110° | 5 | 25 3/4" | 13 3/4" | 11 1/8" | 0000000 | 00000000 | 0000000 | 000000 |
Vacuum-Rated Air Separators for Water Removal
Improve vacuum system efficiency and protect components from moisture—these separators remove over 90% of water from air. Typically used with vacuum pumps, they minimize vacuum pressure drop, even when the element is saturated with water. Separators have a viewing window so you can see inside to monitor water removal. Mount separator vertically for proper drainage (brackets sold separately), and install before air filters.
For technical drawings and 3-D models, click on a part number.

Separators | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | O'all | Drain | Element | Mounting Brackets | ||||||||||||||
Inlet | Outlet | Max. Flow Rate | Max. Vacuum | Max. Temp., °F | Ht. | Dia. | Filter Efficiency | Bowl Cap., fl. oz. | Bowl Material | Pipe Size | Thread Type | Gender | Ht. | OD | Each | Each | ||
NPT Female Connections | ||||||||||||||||||
1/4 | 1/4 | 7 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 6 5/8" | 2 1/16" | 90% | 1 | Polycarbonate Plastic | 1/8 | BSPT | Female | 1 3/4" | 1 3/16" | 0000000 | 0000000 | 0000000 | 00000 |
3/8 | 3/8 | 7 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 6 5/8" | 2 1/16" | 90% | 1 | Polycarbonate Plastic | 1/8 | BSPT | Female | 1 3/4" | 1 3/16" | 0000000 | 000000 | 0000000 | 0000 |
3/8 | 3/8 | 10.6 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 8 1/16" | 2 3/4" | 90% | 2.8 | Polycarbonate Plastic | 1/8 | BSPT | Female | 2 7/8" | 1 7/16" | 0000000 | 000000 | 0000000 | 0000 |
1/2 | 1/2 | 10.6 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 8 1/16" | 2 3/4" | 90% | 2.8 | Polycarbonate Plastic | 1/8 | BSPT | Female | 2 7/8" | 1 7/16" | 0000000 | 000000 | 0000000 | 0000 |
3/4 | 3/4 | 17.6 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 11 3/16" | 3 1/2" | 90% | 2.8 | Polycarbonate Plastic | 1/8 | BSPT | Female | 3 3/8" | 1 5/8" | 0000000 | 000000 | 0000000 | 0000 |
1 | 1 | 17.6 scfm @ 14.7 psi | 29.5 in. of Hg | 140° | 11 3/16" | 3 1/2" | 90% | 2.8 | Polycarbonate Plastic | 1/8 | BSPT | Female | 3 3/8" | 1 5/8" | 0000000 | 000000 | 0000000 | 0000 |
Moisture/Particle Separators
These separators remove 99% of moisture and particles, leaving you with nothing but clean dry air, inert gas, or steam. They have no baskets or cartridges to clean or replace. Particles fall to the bottom of the separator and are discharged through the drain trap with minimal pressure loss.
Separators with 150 psi are smaller and more efficient; a baffle separates contaminants from your media. Separators with 250 psi use centrifugal flow to remove contaminants from your media.
For technical drawings and 3-D models, click on a part number.

Drain | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Removes Particle Size Down To, microns | Max. Flow Rate | Steam Capacity | Max. Temp., °F | Specifications Met | Each | |
3/4 | NPT | Female | 3/8 | NPT | Female | 10 | 145 scfm @ 150 psi | 390 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 0000000 |
1/2 | NPT | Female | 3/8 | NPT | Female | 10 | 100 scfm @ 150 psi | 235 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 000000 |
1 | NPT | Female | 3/8 | NPT | Female | 10 | 180 scfm @ 150 psi | 595 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 000000 |
1 1/4 | NPT | Female | 3/8 | NPT | Female | 10 | 330 scfm @ 150 psi | 900 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 000000 |
1 1/2 | NPT | Female | 1/2 | NPT | Female | 10 | 440 scfm @ 150 psi | 1,650 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 00000000 |
2 | NPT | Female | 1/2 | NPT | Female | 10 | 700 scfm @ 150 psi | 2,250 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 00000000 |
2 1/2 | NPT | Female | 1/2 | NPT | Female | 10 | 1,350 scfm @ 150 psi | 3,800 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 00000000 | 00000000 |

Drain | Vent | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Removes Particle Size Down To, microns | Max. Flow Rate | Steam Capacity | Max. Temp., °F | Specifications Met | Each | |
1 | NPT | Female | 3/4 | NPT | Female | 1/4 | NPT | Female | 10 | 190 scfm @ 150 psi | 700 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 0000000 | 0000000 |
1 1/4 | NPT | Female | 3/4 | NPT | Female | 1/4 | NPT | Female | 10 | 300 scfm @ 150 psi | 1,100 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 0000000 | 00000000 |
1 1/2 | NPT | Female | 3/4 | NPT | Female | 1/4 | NPT | Female | 10 | 425 scfm @ 150 psi | 1,450 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 0000000 | 00000000 |
2 | NPT | Female | 3/4 | NPT | Female | 1/4 | NPT | Female | 10 | 770 scfm @ 150 psi | 2,800 lbs./hr. @ 150 psi | 450° | ASME BPVC.VIII | 0000000 | 00000000 |