The AirTAC GFR40010MLC1WTK AirTAC Filter Regulator NPT3/8 is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400 series is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration, GFR40010MLC1WTK, is the size 400 unit with a 3/8 in NPT port, the fine 5 um filter element (code W), a manual drain bowl, the low-pressure regulator type, a round pressure gauge reading in MPa, a reverse/check valve fitted, and a mounting bracket included. The polycarbonate bowl lets you see accumulated condensate, and the manual drain lets you release it on a schedule you control. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of drain type, 40 um standard or 5 um fine filtration, gauge style and scale options, PT, G or NPT threads, and bracket choices. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR40010MLC1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Filter and regulate the air feeding carton-sealing and case-erector cylinders on a packaging line, with the 5 um element protecting valve spools from particulate and the manual drain cleared during shift checks.
Condition the compressed air supply to a lab automation or sample-handling skid, where the low-pressure regulator type suits lower set pressures and the round MPa gauge gives a clear local reading.
Supply filtered, regulated air to stopper and pusher actuators along a bottling conveyor, with the reverse/check valve holding downstream pressure and the bracket simplifying mounting beside the line.
Start with the port step: this unit is size 400 with a 3/8 in NPT port; step up to size 600 or down to size 300 if your line size or air demand points elsewhere, and match the thread to your piping - PT is the AirTAC standard, with G (BSPP) and NPT available as catalogue options to order. For drainage, choose manual (as here) if you can bleed the bowl during checks, automatic for hands-off condensate removal, or differential-pressure as the default behaviour. Filtration is 40 um standard; the W code on this unit selects the 5 um fine element for downstream equipment that needs cleaner air. The low-pressure regulator type on this unit is intended for applications working at lower set pressures; the exact regulation range for the low-pressure type is not published, so confirm it with us. Gauge style and scale (MPa, psi or bar) and the bracket are also decodable choices.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote a flow figure. Send us your application details and we will confirm the datasheet curves and the right size before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as performance curves, not as a single rated figure, so we do not quote a flow number for this unit. Tell us your application - line pressure, set pressure and the equipment it feeds - and we will confirm the datasheet curves and check the sizing for you on request.
The M code in GFR40010MLC1WTK selects the manual drain: you release accumulated condensate from the polycarbonate bowl yourself, which suits installations checked on a regular schedule. The same GFR400 series is also available with an automatic drain (code A) or the differential-pressure drain default, so choose the drain type that matches how the unit will be maintained.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.