The AirTAC GFR40010ALF2G AirTAC Filter Regulator G3/8 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 GFR40010ALF2G is an AirTAC GFR400 series filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure with the low-pressure type regulator. This configuration has a G3/8 (BSPP) port, an automatic drain that expels collected condensate without manual attention, a polycarbonate bowl, an embedded square gauge reading in psi, and a mounting bracket included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drain, 40 um or 5 um (W) filtration, gauge scale in MPa, psi or bar, and a low-pressure regulator option. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010ALF2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) 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 — square, psi scale |
| Reflux valve | Not fitted |
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). |
| F | Gauge shape: Square. 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. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
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) |
On a fixture or clamping station that must run at a reduced regulated pressure below the standard regulator span, this low-pressure type GFR400 cleans the supply with its 40 um element and holds the set pressure, with the psi square gauge giving the operator a direct readout at the machine.
Feeding cylinders and actuators on a packaging or cartoning conveyor, the unit strips condensate and pipe-scale from the shop air and regulates the supply to the line. The automatic drain carries away collected water without an operator having to visit the bowl each shift.
Installed at the drop feeding a machine tool's air circuit, the GFR40010ALF2G filters the incoming compressed air and regulates it before it reaches valves and cylinders, with the included bracket fixing the unit to the machine frame and the psi gauge showing supply pressure at a glance.
Start with size and port: GFR400 with a 3/8 in port sits in the middle of the 200/300/400/600 range, so step up or down according to the air demand of the circuit. Choose the drain to suit access: automatic (as here) suits enclosed or infrequently visited installations, manual suits attended stations, and differential-pressure drain is the catalogue default. Filtration is 40 um standard; specify the W code for 5 um where finer protection is needed. The embedded square gauge is standard and can be ordered with MPa, psi or bar scale; an external round gauge is optional. Thread is G (BSPP) on this unit, with PT as the catalogue standard and NPT available as an order option. A mounting bracket is included. Note this is the low-pressure regulator type for circuits regulated below the standard range; we will confirm the exact regulation span from the datasheet on request. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as characteristic curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your application's air demand and line conditions and we will confirm the relevant figures from the datasheet on request before you order.
This configuration carries the A drain code, meaning an automatic drain that discharges collected condensate from the bowl without manual attention. The catalogue also offers manual drain (code M) and differential-pressure drain (no code, the default), so you can match the drain to how often the installation is attended. The bowl on this 400 size is polycarbonate; only the 600 size uses an aluminium alloy bowl.
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.