The AirTAC GFR40010ALC2WTK AirTAC Filter Regulator NPT3/8 5um 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 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 AirTAC GFR40010ALC2WTK is a GFR400-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries the 5 um filter element (code W, against the 40 um standard), an automatic drain that discharges collected condensate without manual attention, and a round gauge reading in psi. The L in the code marks the low-pressure regulator type, and a reverse/check valve is fitted. The port is NPT3/8 (3/8 in), the bowl on this 400 size is polycarbonate (PC), the unit is rated to 1.0 MPa (145 psi) maximum inlet and -5 to 70 C (non-freezing), and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, in PT (the standard), G and NPT threads, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge and scale choices, and optional brackets. Flow for this model is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010ALC2WTK AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (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, psi 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". |
| 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. |
| 2 | Gauge scale: psi. 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) |
Feeding spray guns in a finishing booth: the 5 um element strips water and particles that would spoil the finish, the low-pressure regulator lets the painter dial in the gun supply, and the automatic drain keeps condensate out of the line.
Filtered, regulated air for the cylinders on a carton-sealing or filling line, where the round psi gauge lets the setter read supply at a glance and the fitted reverse/check valve guards the downstream circuit.
Clean, low-pressure regulated air for bench test rigs and pneumatic instrumentation panels, where the 5 um grade protects sensitive components and the automatic drain suits an unattended rig.
Choices you can decode from the code: size 400 with a NPT3/8 port for the air line; drain type - automatic here, chosen over manual (periodic draining) or differential-pressure; filter grade - 5 um here for finer protection versus the 40 um standard; gauge - a round psi scale here, with the embedded square gauge and MPa/bar scales also available; thread - NPT here while PT is the AirTAC standard and G is also orderable; and a mounting bracket is included. The low-pressure (L) regulator type is intended for circuits working below standard mains pressures - the exact adjustment range is not published, so confirm it with us before ordering.
Flow is published as curves, not a single rating, so send us your application's air demand and line pressure and we will confirm sizing against the datasheet 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 this series as curves rather than a single rated figure, so we do not quote a number. Send us your application's air demand and line pressure and we will confirm the flow from the datasheet on request.
The 40 um element is the standard grade for general plant air. The 5 um element fitted here is the finer catalogue option for work such as spray finishing, instrumentation or close-tolerance pneumatic components. The W in the code selects the 5 um grade on this family.
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.