The AirTAC GFR40015ALJF2WGK AirTAC Filter Regulator G1/2 Low-Pressure 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 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 GFR40015ALJF2WGK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration is the size 400 unit with a G1/2 (BSPP) port, built as the low-pressure type for circuits that run below standard line pressure. It carries a 5 um filter element (code W), an automatic drain, an embedded square gauge scaled in psi, and a reverse/check valve. No mounting bracket is included (code J), and the polycarbonate bowl gives a clear view of collected condensate.
This is a genuine AirTAC part. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus drain, filter-grade, gauge and thread options to match the line. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015ALJF2WGK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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 — square, 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. |
|---|---|
| 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. |
| W | Filtering grade 5 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. |
| 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Conditioning the air feeding directional-control valve manifolds on a bottling line: the 5 um element traps water and fine particulate before they reach the valves, while the low-pressure regulator holds the circuit at the pressure the valve bank was set up for.
Air preparation for clamping fixtures in a machining cell: filtered, regulated air to the clamp cylinders, with the psi gauge giving operators a visible setpoint and the reverse/check valve helping hold the downstream circuit if supply dips.
Supplying air to low-pressure actuation on a packaging machine's sealing arms, where the automatic drain keeps condensate out of the valves through continuous shifts and the 5 um element protects the small pilot components.
Size the unit by port and demand: size 400 carries the 1/2 inch port, and the G thread here is BSPP - PT is the standard thread and NPT is an order option. The 5 um element (W) suits points where finer particulate matters; 40 um is the standard grade. The automatic drain (A) expels condensate without manual checks, while manual and differential-pressure drains are the other catalogue choices. The square gauge is scaled in psi (scale 2); MPa and bar scales, and an external round gauge, are options. This unit is supplied without a mounting bracket (J); brackets are optional. Flow is published as curves, not a single rating, so 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.
Flow for the GFR400 is published as curves, not a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and sizing from the AirTAC datasheet before you order.
Code A fits the automatic drain, which expels collected condensate from the bowl without manual attention. Manual (M) and differential-pressure (blank) drains are the other catalogue options for the GFR400 - let us know which you prefer when ordering.
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.