The AirTAC GFR40015ALC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 PT1/2" ports, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR40015ALC1WTK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has 1/2 in NPT ports, a 5 um filter element (code W), an automatic drain, the low-pressure regulator type, a round MPa gauge, a reverse/check valve and a mounting bracket, with a polycarbonate bowl for a clear view of collected condensate. It is rated for a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 in, PT (standard), G or NPT threads, drain choices, 40 um or 5 um elements, gauge styles and scales, and a low-pressure regulator option. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application on request.
| Model | GFR40015ALC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Automatic 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Filtering and regulating the air feeding quarter-turn actuators on a water-treatment valve manifold, where the low-pressure regulator type and 5 um clean air suit positioner and seal protection.
Supplying regulated low-pressure air to clamping cylinders on a machining fixture, with the fitted MPa gauge giving the operator a clear readout at the set point.
Conditioning air for diverters and reject pushers on a packaging conveyor line, with the automatic drain clearing condensate through continuous shifts.
Size 400 with 1/2 in NPT ports is the larger step above the 200/300 sizes; match the size to your air demand and confirm it against the published flow curves before ordering - we will check sizing with you on request. For the drain, automatic (this unit, code A) expels condensate without manual attention, while manual and differential-pressure drains suit other service patterns. The 5 um element (code W) gives finer filtration than the 40 um standard where downstream valves and cylinders need cleaner air.
Other decodable choices on GFR units: gauge style (embedded square is standard, external round is the optional fit on this model) with MPa, psi or bar scales; PT thread as the standard with G and NPT as catalogue options; bracket included here; and the low-pressure regulator type, whose exact range is not published - confirm it with us. A reverse/check valve is fitted on this model.
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 G-series flow as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request.
Code A fits an automatic drain that expels collected condensate from the bowl without manual attention. Manual (code M) and differential-pressure (blank) drains are the other catalogue options if your maintenance pattern calls for them.
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.