About Air Preparation
More
Timer-Operated Compressed Air Drain Valves
Set the electronic timer on these drain valves to open automatically at your specified time interval. They’re excellent for compressed air systems with high oil content because they resist clogging when water, oil, and sediment combine to form sludge. Install drain valves after separators, dryers, filters, and aftercoolers to collect and remove water from your air line.
Drain valves that meet NEMA 4 are rated for protection from dirt and washdowns. Drain valves that meet NEMA 4X are rated for protection from dirt, washdowns, and corrosion.
Install optional strainers before drain valves to prevent damage from debris in your pipeline.
For technical drawings and 3-D models, click on a part number.
Drain Valves | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Optional Strainers | |||||||||||||||
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Cycle Interval | Drain Time | Max. Temp., °F | Includes | Each | Each | ||
Brass Housing—IP65, NEMA 4 Enclosure | ||||||||||||||||||
Electric Powered, 24V DC—Hardwire | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 4.5 | 230 | 4 1/2" | 2" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 0000000 | 0000000 | 000000 |
3/8 | NPT | Female | 3/8 | NPT | Female | 1.2 | 230 | 4 1/2" | 2" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
1/2 | NPT | Female | 1/2 | NPT | Female | 4.5 | 230 | 4 1/2" | 2" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
Electric Powered, 120V AC—Three-Prong Plug | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 4.8 | 230 | 4 1/4" | 1 3/4" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
1/4 | NPT | Female | 1/4 | NPT | Female | 15 | 300 | 4 5/8" | 2 1/2" | 3 5/8" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
3/8 | NPT | Female | 3/8 | NPT | Female | 7 | 230 | 4 1/4" | 1 3/4" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
3/8 | NPT | Female | 3/8 | NPT | Female | 19 | 300 | 4 5/8" | 2 1/2" | 3 5/8" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
1/2 | NPT | Female | 1/2 | NPT | Female | 7 | 230 | 4 1/4" | 1 3/4" | 3 1/2" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
1/2 | NPT | Female | 1/2 | NPT | Female | 15 | 300 | 4 5/8" | 2 1/2" | 3 5/8" | 1-45 min. | 0.5-10 sec. | 130° | __ | 0000000 | 000000 | 0000000 | 00000 |
Brass Housing—NEMA 1 Enclosure | ||||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 1.2 | 200 | 3 1/4" | 4" | 4 1/4" | 1-60 min. | 1-30 sec. | 120° | __ | 0000000 | 000000 | 0000000 | 00000 |
Brass Housing—NEMA 4X Enclosure | ||||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 2.9 | 200 | 4 1/8" | 6" | 3 3/4" | 0-50 min. | 1-15 sec. | 180° | Strainer | 0000000 | 000000 | 000000 | 00 |
1/2 | NPT | Female | 1/2 | NPT | Female | 6 | 300 | 4" | 6" | 3 3/4" | 0-50 min. | 1-15 sec. | 180° | Strainer | 00000000 | 000000 | 000000 | 00 |
Electric Powered, 240V AC—Hardwire | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 2.9 | 200 | 4 1/8" | 6" | 3 3/4" | 0-50 min. | 1-15 sec. | 180° | Strainer | 0000000 | 000000 | 000000 | 00 |
Replacement Filter Screens for Optional Strainers | 0000000 | Each | 00000 |
High-Pressure Timer-Operated Compressed Air Drain Valves
These withstand at least double the pressure of our other timer-operated drain valves. Set the electronic timer to open automatically at your specified time interval. These drain valves are excellent for compressed air systems with high oil content because they resist clogging when water, oil, and sediment combine to form sludge. Install drain valves after separators, dryers, filters, and aftercoolers to collect and remove water from your air line.
Drain valves that meet NEMA 4 are rated for protection from dirt and washdowns. Drain valves that meet NEMA 4X are rated for protection from dirt, washdowns, and corrosion.
Install optional strainers before drain valves to prevent damage from debris in your pipeline.
For technical drawings and 3-D models, click on a part number.
Drain Valves | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Optional Strainers | ||||||||||||||
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Cycle Interval | Drain Time | Max. Temp., °F | Each | Each | ||
Brass Housing—IP65, NEMA 4 Enclosure | |||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | |||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 3 | 1,200 | 4 1/2" | 2" | 3 3/8" | 1-45 min. | 0.5-10 sec. | 130° | 0000000 | 0000000 | 000000 | 00 |
3/8 | NPT | Female | 3/8 | NPT | Female | 4 | 1,200 | 4 1/2" | 2" | 3 3/4" | 1-45 min. | 0.5-10 sec. | 130° | 0000000 | 000000 | 000000 | 00 |
1/2 | NPT | Female | 1/2 | NPT | Female | 3 | 1,200 | 4 1/2" | 2" | 3 3/8" | 1-45 min. | 0.5-10 sec. | 130° | 0000000 | 000000 | 000000 | 00 |
1/2 | NPT | Female | 1/2 | NPT | Female | 18 | 600 | 6" | 6 3/8" | 3" | 1-24 hrs. | 1-15 min. | 140° | 00000000 | 000000 | 000000 | 00 |
Bronze Housing—NEMA 4X Enclosure | |||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | |||||||||||||||||
1/2 | NPT | Female | 1/2 | NPT | Female | 1.25 | 600 | 7" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 0000000 | 000000 |
3/4 | NPT | Female | 3/4 | NPT | Female | 2.5 | 600 | 7 1/2" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 000000 | 00 |
1 | NPT | Female | 1 | NPT | Female | 4.3 | 600 | 7 3/4" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 000000 | 00 |
316 Stainless Steel Housing—NEMA 4X Enclosure | |||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | |||||||||||||||||
1/2 | NPT | Female | 1/2 | NPT | Female | 1.25 | 2,000 | 7" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 000000 | 00 |
3/4 | NPT | Female | 3/4 | NPT | Female | 2.5 | 600 | 7 1/2" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 000000 | 00 |
1 | NPT | Female | 1 | NPT | Female | 4.3 | 600 | 7 3/4" | 7 5/8" | 4" | 1-50 min. | 5 sec. | 180° | 00000000 | 000000 | 000000 | 00 |
Replacement Filter Screens for Optional Strainers | 0000000 | Each | 00000 |
Timer-Operated Compressed Air Drain Valves with Digital Display
Use the digital display to set these valves to open automatically at precise intervals. They’re excellent for compressed air systems with high oil content because they resist clogging when water, oil, and sediment combine to form sludge. Install drain valves after separators, dryers, filters, and aftercoolers to collect and remove water from your air line. They meet NEMA 4 for protection from dirt and washdowns.
Install optional strainers before drain valves to prevent damage from debris in your pipeline.
For technical drawings and 3-D models, click on a part number.
Drain Valves | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Optional Strainers | |||||||||||||||
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Cycle Interval | Drain Time | Display Type | Max. Temp., °F | Each | Each | ||
Brass Housing with LED Display—IP65, NEMA 4 Enclosure | ||||||||||||||||||
Electric Powered, 120V AC—Three-Prong Plug | ||||||||||||||||||
1/4 | NPT | Female | 1/4 | NPT | Female | 7 | 230 | 3 3/4" | 1 3/4" | 3 1/2" | 0-99 hrs. | 0-99 hrs. | LED | 130° | 000000 | 0000000 | 0000000 | 000000 |
3/8 | NPT | Female | 3/8 | NPT | Female | 7 | 230 | 3 3/4" | 1 3/4" | 3 1/2" | 0-99 hrs. | 0-99 hrs. | LED | 130° | 000000 | 000000 | 0000000 | 00000 |
1/2 | NPT | Female | 1/2 | NPT | Female | 7 | 230 | 3 3/4" | 1 3/4" | 3 1/2" | 0-99 hrs. | 0-99 hrs. | LED | 130° | 000000 | 000000 | 0000000 | 00000 |
Replacement Filter Screens for Optional Strainers | 0000000 | Each | 00000 |
Easy-to-Monitor Float-Operated Compressed Air Drain Valves
Keep an eye on condensate collecting in your compressed air line. These drain valves have a clear bowl, so you can see inside to inspect the contents. Also known as drip legs, these have a float that automatically opens the drain when the bowl begins to fill. Install them at low points in your line after separators, dryers, filters, and aftercoolers. Drains can be serviced without removing them from your air line.
For technical drawings and 3-D models, click on a part number.
Drain Valves | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Replacement Bowls | ||||||||||||||
Pipe Size | Thread Type | Gender | Connection Type | For Tube ID | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Max. Temp., °F | Each | Each | ||
Polycarbonate Bowl—Clear | |||||||||||||||||
1/4 | NPT | Female | Threaded | __ | 3/8 | NPT | Female | Not Rated | 145 | 7 1/8" | 3 1/8" | 3 1/8" | 140° | 0000000 | 000000 | 0000000 | 000000 |
3/8 | NPT | Female | Threaded | __ | 3/8 | NPT | Female | Not Rated | 145 | 7 1/8" | 3 1/8" | 3 1/8" | 140° | 0000000 | 00000 | 0000000 | 00000 |
Nylon Bowl—Clear | |||||||||||||||||
1/2 | NPT | Female | Barbed | 6 mm | __ | __ | Male | 1.2 | 145 | 6 5/8" | 2 3/8" | 2 3/8" | 122° | 0000000 | 000000 | 0000000 | 00000 |
Compact Float-Operated Compressed Air Drain Valves
Sized right for tight spots. Also known as drip legs, these drain valves have a float that automatically opens the drain when the bowl begins to fill. Install them at low points in your line after separators, dryers, filters, and aftercoolers. Drains can be serviced without removing them from your air line.
For technical drawings and 3-D models, click on a part number.
High-Pressure Float-Operated Compressed Air Drain Valves
Able to withstand up to 400 psi, these have the highest pressure rating of all our float-operated drain valves. Also known as drip legs, these drain valves have a float that automatically opens the drain when the bowl begins to fill. Install them at low points in your line after separators, dryers, filters, and aftercoolers.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Overall | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Max. Temp., °F | Each | |
Stainless Steel Bowl—Opaque | |||||||||||||
1/2 | NPT | Female | 1/2 | NPT | Female | 2.2 | 400 | 7 1/2" | 2 5/8" | 2 5/8" | 500° | 0000000 | 0000000 |
Easy-to-Clean Float-Operated Compressed Air Drain Valves
An external drain provides quick, easy access for cleaning. Also known as drip legs, these drain valves have a float that automatically opens the drain when the bowl begins to fill. Install them at low points in your line after separators, dryers, filters, and aftercoolers. Drains can be serviced without removing them from your air line.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Overall | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap. | Max. Pressure, psi | Ht. | Wd. | Dp. | Drain Material | Max. Temp., °F | Each | |
Polycarbonate Bowl—Opaque | ||||||||||||||
1/2 | NPT | Female | 1/4 | NPT | Female | Not Rated | 150 | 7 3/4" | 3 3/4" | 3 3/4" | Bronze | 120° | 0000000 | 0000000 |
High-Discharge Float-Operated Compressed Air Drain Valves
With a discharge capacity of more than four gallons per minute, these drain valves can handle large compressed air systems. Also known as drip legs, these drain valves have a float that automatically opens the drain when the bowl begins to fill. Install them at low points in your line after separators, dryers, filters, and aftercoolers. Drains can be serviced without removing them from your air line.
For technical drawings and 3-D models, click on a part number.
Back-Pressure-Operated Compressed Air Drain Valves
When your compressor turns off, it creates back pressure that opens these valves automatically, allowing liquid to escape. Moisture is atomized as it is discharged through the included muffler, eliminating the need for discharge piping. The muffler also minimizes noise. Install drain valves after coolers, separators, dryers, and filters.
For technical drawings and 3-D models, click on a part number.
Drain Valves | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Overall | Replacement Mufflers | |||||||||||||
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Ht. | Wd. | Dp. | Max. Temp., °F | Includes | Each | Each | ||
Steel Housing | ||||||||||||||||
3/8 | NPT | Female | 3/8 | NPT | Female | 0.4 | 600 | 5" | 2 5/8" | 2 5/8" | 220° | Muffler | 000000 | 0000000 | 000000 | 000000 |
1/2 | NPT | Female | 1/2 | NPT | Female | 0.4 | 600 | 5 1/2" | 2 5/8" | 2 5/8" | 220° | Muffler | 000000 | 000000 | 000000 | 00000 |
No-Air-Loss Compressed Air Drain Valves
Save energy by minimizing the loss of compressed air. Unlike other drain valves, these only open when they're full. They close before the reservoir is completely empty, so no air escapes from the system. Install them at low points in your air line after separators, dryers, filters, and aftercoolers.
Air-powered valves don’t need to be plugged into an electrical outlet. When water raises the float to a set point, these valves open. They have a simple internal design and large openings to prevent clogs. Drain valves with an air pilot require an additional line of air to operate. Install a 5-micron particle filter (sold separately) before the 1- and 3.5-gpm capacity valves.
Electric-powered valves have a sensor. When condensate inside the valve rises to the level of the sensor, the valve opens to drain. Valves detect when they’re blocked—they automatically open and close to attempt to remove the blockage and sound an alarm if they’re still blocked. Drain valves with a contact for remote signaling device can be wired to activate a remote alarm if blocked.
Inlet | Outlet | Air Pilot | Overall | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | For Tube ID | Pipe Size | Thread Type | Gender | Discharge Cap., gpm | Max. Pressure, psi | Pipe Size | Thread Type | Gender | Ht. | Wd. | Dp. | Max. Temp., °F | Features | Each | |
Aluminum Housing | ||||||||||||||||||
Air Powered | ||||||||||||||||||
1/2 | NPT | Female | __ | 1/2 | NPT | Female | 1 | 200 | 1/8 | NPT | Female | 7 3/8" | 8 1/4" | 5 7/8" | 130° | Resevoir Window | 0000000 | 0000000 |
1/2 | NPT | Female | __ | 1/2 | NPT | Female | 1.5 | 170 | 1/4 | NPT | Female | 11" | 9 1/4" | 10 1/2" | 130° | Clear Resevoir, Particle Filter | 0000000 | 00000000 |
3/4 | NPT | Female | __ | 1/2 | NPT | Female | 3.5 | 250 | 1/8 | NPT | Female | 8 1/2" | 13 5/8" | 9 1/8" | 180° | Clear Resevoir | 0000000 | 00000000 |
Electric Powered, 120V AC—Hardwire | ||||||||||||||||||
1/2 | NPT | Female | 1/4" | __ | __ | Male | 0.2 | 230 | __ | __ | __ | 2 7/8" | 4 7/8" | 3 5/8" | 120° | Alarm | 0000000 | 000000 |
Electric Powered, 120V AC—Three-Prong Plug | ||||||||||||||||||
1/2 | NPT | Female | 3/8" | 1/4 | NPT | Male | 2.9 | 230 | __ | __ | __ | 4 1/2" | 3 3/8" | 7" | 120° | Alarm, Contact for Remote Signaling Device | 0000000 | 000000 |