The AirTAC GFR40010ALJC2W AirTAC Filter Regulator PT3/8 5 um 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 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 GFR40010ALJC2W is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in a single body. This configuration is the size 400 unit with a PT3/8 port, a 5 um filter element (code W) instead of the 40 um standard, an automatic drain that discharges condensate without manual attention, and the low-pressure regulator type. A round external gauge scaled in psi is fitted, and the bowl on this size is polycarbonate (PC). No mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain choices of differential-pressure (default), automatic or manual, filter grades of 40 um standard or 5 um optional (W), and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010ALJC2W AirTAC Filter Regulator PT3/8 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT 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 — round, 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. |
| J | Supplied without bracket. |
| (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. |
| W | Filtering grade 5 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a workshop pneumatic press, the low-pressure regulator holds a gentle set point while the 5 um element keeps water and sludge out of the cylinder seals; the round psi gauge gives a direct pressure read at the machine.
Feeding spray guns in a paint booth, this unit filters the air to 5 um and holds a steady atomising pressure, with the automatic drain clearing bowl condensate between shifts without operator attention.
On a carton-sealing packaging line, the PT3/8 filter regulator sits at the machine inlet, protecting solenoid valves and cylinders from moisture and keeping actuator pressure steady through the shift.
Choose the size and port against the flow your line needs: this unit is size 400 with a PT3/8 port, a step up from size 300. Drain type is a real decision: the automatic drain here empties the bowl on its own, while manual (M) and differential-pressure (default) drains suit other duty patterns. The 5 um element (code W) is the finer choice over the 40 um standard; pick it where downstream valves and cylinders need cleaner air. This is the low-pressure regulator type, and the round psi gauge is fitted. Thread finish is PT as standard, with G or NPT as order options, and the bracket is omitted (code J). Flow is published as curves, not a single rating, so ask us to confirm sizing against your application 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 as curves, not a single rated figure, so we do not quote a number here. Tell us your line's required flow and pressure and we will confirm the datasheet curve for this 3/8 in unit on request.
This configuration carries drain code A: the polycarbonate bowl discharges condensate automatically, with no manual attention. The same GFR400 size can be ordered with a manual drain (code M) or the differential-pressure default instead, and filter grade, gauge scale and thread are also order choices.
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.