1-805-484-2992
Quotes - Engineering - Sales
ND Series Zero-Loss Condensate Drains
| PRODUCT | TYPE | POWER | RATING |
|---|---|---|---|
| Zero-Loss Condensate Drain | Float, magnetic, pneumatic or electronic | None, or 115 V | 230 psig; NED 12 to 290 psig |
Specifications
Configuration & Size
Models:
NED 12, NMD 6, NMD 12, TD 3000, NED 4L to NED 350LC, NHD 12
Connections:
1/2 in inlets; 1/8 to 1/2 in outlets; two inlets on 8LC and up
Power:
None on NED 12, NMD and TD; 115 V cord on NED-LC and NHD
Alarm:
Volt-free contact on the electronic models
Features
- NED 12 float drain: the simplest, no power, on filter bowls, small separators and small receivers, 290 psig
- NMD 6 and NMD 12: a magnet latches the float valve shut and snaps it open, so it does not weep at low level and needs no power
- TD 3000: pneumatic level drain with three 1/2 in inlets for a tank or separator with a balance line, 230 psig
- NED-LC: capacitive level sensor, pilot-operated valve, alarm contact; the drain for receivers, aftercoolers and dryers in a working plant
Five ways to open only when there is water
Pick the mechanism by where the drain lives and what power is there
The ND Series covers the drains that open only when there is liquid to discharge, so no compressed air is vented with it. Five mechanisms share the family. The NED 12 is a pneumatic float drain for filter bowls and small receivers, rated 290 psig. The NMD 6 and NMD 12 are magnetically latched float drains with no power connection. The TD 3000 is a pneumatic level drain with three inlets for tanks and separators. The NED-LC models are electronic level-controlled drains with a capacitive sensor, an alarm contact and a 115 V cord, sized from a shop compressor to a central plant. The NHD 12 adds a heater for outdoor or unheated locations.
What zero loss is worth. A timer drain set to open 5 seconds every 2 minutes through a 1/4 in port vents several SCFM on average, close to a horsepower of compressor running around the clock; Zero-loss drains pay back fastest on compressors that idle part of the day, when the timer keeps venting a full receiver; Two 1/2 in inlets on the 8LC and larger sizes let the drain be piped with a balance line so it fills under pressure without air-locking; NHD 12 heated version keeps the chamber from freezing on an outdoor receiver or in an unheated compressor shed.
One drain per collection point. Separator and receiver take the largest load: an NED-LC or TD 3000 with a balance line; The dryer separator and the prefilter bowl take an NED 12 or NMD 12 where no power is handy; Outdoor and cold-room receivers take the NHD 12, or an NED-LC inside a heated enclosure.
ND Series Zero-Loss Drains Part Numbers
| Part Number | Connection | Type | Rating |
|---|---|---|---|
| NED 12 | 1/2 in FNPT in, 1/2 in FNPT out | Zero air loss | Automatic float drain, 290 psig, no power |
| NMD 6 | 1/2 in FNPT in, 1/8 in FNPT out | Zero air loss | Magnetic zero-air-loss, 230 psig, no power |
| NMD 12 | 1/2 in FNPT in, 1/8 in FNPT out | Zero air loss | Magnetic zero-air-loss, 230 psig, no power; Test-button version drawn separately |
| TD 3000 | 1/2 in FNPT x3 in, 1/4 in FNPT out | Zero air loss | Pneumatic zero-air-loss, 230 psig, no power |
| NED 4L N12 115 | 1/2 in MNPT in, 3/8 in FNPT (hose barb) out | Zero air loss | Level-controlled electronic, 230 psig, 115 V, smallest size |
| NED 6L N12 115 | 1/2 in FNPT in, 3/8 in hose barb out | Zero air loss | Level-controlled electronic, 230 psig, 115 V |
| NED 8LC N12 115 | 1/2 in FNPT x2 in, 3/8 in FNPT out | Zero air loss | Level-controlled electronic, 230 psig, 115 V |
| NED 16LC N12 115 | 1/2 in FNPT x2 in, 3/8 in FNPT out | Zero air loss | Level-controlled electronic, 230 psig, 115 V |
| NED 40LC N12 115 | 1/2 in FNPT x2 in, 3/8 in FNPT out | Zero air loss | Level-controlled electronic, 230 psig, 115 V |
| NED 160LC N12 115 | 1/2 in G x2 in, 3/8 in FNPT out | Zero air loss | Level-controlled electronic, 230 psig, 115 V |
| NED 350LC N12 115 | 3/8 in FNPT x2 + 3/4 in FNPT x1 in, 3/8 in hose barb out | Zero air loss | Level-controlled electronic, 230 psig, 115 V, largest size |
| NHD 12 | 1/2 in FNPT in, 1/4 in FNPT out | Zero air loss | Heated zero-air-loss, 230 psig, 115 V |
Ratings are maximum working pressure; the NED-LC drains are matched to compressor horsepower and condensate load when quoted, and the NED 160LC carries G-thread inlets. Full part-number pages for this series are on our nano dryers site: www.nanodryers.com/Condensate-Drains.html. Each part number above links straight to its page there.
ND Series Zero-Loss Drains Applications
Dimensions and mounting
Inlet at the top, chamber below the lowest point of what it drains, discharge to the side.
Every drain in the series wants the same thing: gravity feed from the lowest point of the vessel it serves, with the inlet at or above the top of the drain body and no rise in the pipe between them. A drain mounted higher than the bowl outlet, or fed through a long horizontal run, fills slowly and air-locks. The float and magnetic models hang directly off the bowl or tank drain port on a short nipple; the TD 3000 and the NED-LC sizes with two inlets take the condensate in one port and a balance line from the vessel's air space in the other, which is what lets them fill under full pressure.
The discharge is a small port, 1/8 in on the magnetic drains, 1/4 or 3/8 in on the rest, and it should run downhill to an oil-water separator or a condensate line with no valve that can be left closed. Mount the electronic drains with the sensor upright, keep the 115 V cord and the alarm contact clear of the discharge, and leave a hand's width around the test button.
Confirm the drain size, the inlet arrangement and the balance-line need for your vessel with the quote; the drawing above is representative of the electronic models.
Common FAQs
None, or 115 V
- Models: NED 12, NMD 6, NMD 12, TD 3000, NED 4L to NED 350LC, NHD 12
- Connections: 1/2 in inlets; 1/8 to 1/2 in outlets; two inlets on 8LC and up
- Power: None on NED 12, NMD and TD; 115 V cord on NED-LC and NHD
- Alarm: Volt-free contact on the electronic models
- Max pressure: 230 psig; NED 12 rated 290 psig
- Bodies: Aluminum throughout
- Air loss: None on discharge
- Sizing: By compressor horsepower and condensate load, with the quote
Every ND Series Zero-Loss Drains part number has its own page on our nano dryers site, www.nanodryers.com/Condensate-Drains.html. The part numbers below link straight there.
