The AirTAC GFR40015ALF2 AirTAC Filter Regulator 1/2 in PT, 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 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 GFR40015ALF2 is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has PT1/2 (1/2 in) ports with PT thread as standard, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, and a low-pressure regulator type. An embedded square gauge graduated in psi is fitted, and a mounting bracket is included. The polycarbonate bowl suits the 400 size (only the 600 size uses an aluminium alloy bowl).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with matching port sizes, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge scale (MPa, psi or bar) and G or NPT thread as order options. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR40015ALF2 AirTAC Filter Regulator 1/2 in PT, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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. |
|---|---|
| 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). |
| 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. |
| (blank) | PT 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Filtering and regulating the air feeding pneumatic clamps and hold-downs on a packaging line, with the automatic drain keeping condensate out of a unit mounted inside the machine frame.
Conditioning shop air ahead of spray guns or coating heads where a low regulated pressure is required, using the low-pressure regulator type and the fitted psi gauge for setting.
Supplying filtered, regulated air to diverter gates and stop cylinders along a conveyor line, with the included bracket fixing the unit to the machine frame and the automatic drain handling condensate.
Start with the port step: size 400 carries PT1/2, and moving up or down a size changes both the port and the flow capacity, so match the size to the air demand of the circuit rather than the pipe alone. This unit has the automatic drain, which suits unattended or hard-to-reach installations; manual and differential-pressure drains are available in the same family if you prefer operator-controlled or pressure-differential draining. The standard 40 um element covers general air preparation; specify code W for the 5 um grade where finer filtration is needed. The fitted square gauge reads in psi, and MPa or bar scales plus an external round gauge are options. PT thread is standard on this model; G (BSPP) and NPT versions can be ordered. A mounting bracket is included. Because flow is published as curves and not as a single rated figure, send us your application details 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and required air demand and we will confirm the sizing from the datasheet on request.
L marks the low-pressure regulator type; the exact regulation range for the low-pressure version is not published in the catalogue, so confirm it with us before ordering. The A in the code is the automatic drain, which expels collected condensate from the polycarbonate bowl without manual intervention - an alternative to the manual or differential-pressure drain options in 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.