The AirTAC GFR40010ALC2TK AirTAC Filter Regulator NPT3/8 Low-Pressure is a genuine G-series filter regulator: water separation, 40 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 GFR40010ALC2TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 400 unit is fitted with a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, and a low-pressure regulator type for circuits that run at reduced settings. It carries an external round gauge scaled in psi, a built-in reverse (check) valve that holds downstream pressure when the supply is interrupted, and includes a mounting bracket. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200, 300, 400, 600) with port options from 1/8 in to 1 in and thread choices of PT (standard), G (BSPP) or NPT. Max inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application.
| Model | GFR40010ALC2TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeds filtered, regulated air to clamp cylinders on a CNC fixture line, where the low-pressure type keeps holding pressure in the reduced band the clamps need and the check valve holds the clamp if supply drops.
Conditions and regulates the pilot air feeding quarter-turn actuator solenoid valves on a plant skid, with the automatic drain clearing condensate so moisture never reaches the pilot valves.
Sits at the machine inlet of a carton sealer or wrapper, filtering water and debris out of shop air and setting a stable low pressure for the sealing and ejector cylinders.
Start with the port step: this unit is size 400 with a 3/8 in NPT port; smaller 200/300 sizes suit lighter circuits and size 600 (1/2 in to 1 in ports) suits heavier ones, so match the size to the flow your line needs. The automatic drain on this model suits unattended installations; a manual drain (code M) costs attention at each shift, and the differential-pressure default drains only when the pressure drop warrants it. The 40 um element is the standard grade; specify 5 um (code W) only where finer filtration is required. The round psi gauge on this model is one of the gauge options (embedded square gauge standard, external round optional, scales MPa, psi or bar). The K code adds a reverse/check valve, and the bracket is included; PT is the standard thread, with G and NPT as orderable options. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Tell us your application and we will confirm the flow and datasheet figures on request so you can size the unit correctly.
A is the automatic drain, which ejects collected condensate on its own instead of needing manual bleeding. K means a reverse (check) valve is fitted, holding downstream pressure if the supply is cut. C2 selects the external round gauge with a psi scale; MPa and bar scales are also available.
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.