The AirTAC GFR40015ALJF2G AirTAC Filter Regulator G1/2 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 AirTAC GFR40015ALJF2G is a GFR400-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is built with a G1/2 (BSPP) port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, and the low-pressure regulator type for circuits that run at reduced set points. An embedded square gauge reading in psi is fitted, and the polycarbonate bowl suits the 400 frame.
This is a genuine AirTAC part from the GFR range, which spans sizes 200 to 600 with ports from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, 40 um or 5 um (code W) filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR40015ALJF2G AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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. |
|---|---|
| 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. |
| J | Supplied without bracket. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to clamping and holding cylinders on a packaging machine that runs at reduced set pressures, with the automatic drain clearing condensate between shifts.
Conditioning shop air ahead of spray guns or coating heads, where water and particulate must be stripped from the atomising air line and a modest, steady downstream pressure is required.
Point-of-use preparation on a CNC machine's pneumatic panel, combining water and particle removal with low-pressure regulation for actuated doors, chucks or tool-clamp circuits.
Size and port are the first choice: GFR400 with a 1/2 inch G thread sits in the middle of the range, and larger sizes carry more flow - we can check the curve against your demand. Drain options are automatic (fitted here), manual, or differential-pressure; automatic suits unattended duty. Filter grade is 40 um standard or 5 um with code W for finer protection. The regulator is the low-pressure type; its exact adjustment range is not published, so confirm it with us. Gauge scales come in MPa, psi or bar (this unit reads psi), and threads can be ordered as PT (standard), G or NPT. A mounting bracket is optional; this configuration omits it.
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 GFR range as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow curve and sizing from the datasheet on request.
This unit carries code A - an automatic drain that expels collected condensate without manual attention. The alternatives are a manual drain, which needs periodic bleeding, and the differential-pressure type, which is the default code. Automatic suits unattended or hard-to-reach installations and is selected at order time.
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.