The AirTAC GFR40010ALJC1WT AirTAC Filter Regulator 3/8 NPT Auto Drain 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 GFR40010ALJC1WT is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and reduces pressure in the same unit. This configuration is built on the size 400 body with a 3/8 in NPT port, a 5 um filter element (code W), an automatic drain that ejects collected condensate without manual attention, and a round pressure gauge scaled in MPa. The regulator is the low-pressure type (code L) for circuits that run at reduced settings, and the polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The G-series filter regulator line spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, plus drain, filter-grade, gauge, thread and bracket options; maximum inlet pressure is 1.0 MPa (145 psi) and operating temperature is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010ALJC1WT AirTAC Filter Regulator 3/8 NPT Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Feeds filtered, reduced-pressure air to heat-sealing cylinders on a packaging machine, where the 5 um element and automatic drain keep water and debris out of the sealing valves.
Supplies clean, regulated air to spray guns and dosing pumps in a finishing booth, with fine 5 um filtration and the low-pressure regulator protecting finish quality.
Holds pneumatic clamps on machining fixtures at a gentle, stable setting, with the round MPa gauge giving the operator a clear pressure readout at the machine.
Size and port: the 400 body with a 3/8 in NPT port sits mid-range in the GFR line; step up or down (sizes 200/300/600, ports 1/8 to 1 in) to match the air your line consumes - we can check the published flow curves against your demand. Drain: this code carries the automatic drain, which ejects condensate on its own; manual and differential-pressure drains are the other catalogue choices. Filtration: the 5 um element (W) suits valves, instruments and spray work, while the 40 um standard element is the economical choice for general supply lines. Gauge: the round gauge here reads in MPa; psi and bar scales and the embedded square gauge are the alternatives. Thread: PT is the AirTAC standard and G (BSPP) and NPT are order options - this code is ordered in NPT. No mounting bracket is included (code J); a bracket is available as an option. Flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering.
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 this series as curves rather than a single rated figure, so no single number would be honest. Send us your air demand and line pressure and we will confirm the flow figures from the datasheet for this exact 3/8 in, size 400 configuration before you order.
L marks the low-pressure regulator type, intended for circuits that run at reduced settings rather than the standard regulator range. The exact adjustment range for this type is not published in the material we hold, so tell us your target set pressure and we will confirm suitability from the datasheet on request.
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.