The AirTAC GFR40010ALJF1T AirTAC Filter Regulator NPT3/8 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 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 AirTAC GFR40010ALJF1T is a GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This 400-size unit is threaded NPT3/8 (3/8 in), carries the standard 40 um filter element, and is fitted with an automatic drain, so collected condensate is expelled without manual attention. The regulator is the low-pressure type, and the embedded square gauge (MPa scale) lets you read and set downstream pressure directly at the unit. No mounting bracket is included in this configuration.
This is a genuine AirTAC part from the GFR400 series. The GFR line is offered in sizes 200, 300, 400 and 600 with a choice of drain type (differential-pressure, automatic or manual), a 5 um optional element (code W), gauge style and scale, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010ALJF1T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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, 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding clamp cylinders on a CNC fixture line: the GFR40010ALJF1T cleans water and chips-laden condensate out of the shop air and holds a steady low-pressure setting for consistent clamping force, with the automatic drain keeping the bowl clear between shifts.
Upstream of the valve manifold on a cartoning or wrapping machine: the 3/8 in port matches the machine's main air drop, the 40 um element protects directional valves from particulate, and the MPa gauge gives operators a visible setpoint at the unit.
A filtered, regulated branch feeding several workstations on a factory floor: the low-pressure regulator type suits circuits that run below typical line pressure, and the automatic drain suits a drop point that nobody empties by hand.
Start with the port step: this unit is 400 size with NPT3/8, one step up from the 300 series, so choose it when your line runs larger piping or higher air demand. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Drain choice matters in practice: the automatic drain on this model suits unattended or hard-to-reach installations, while manual and differential-pressure drains are available in the series. The standard 40 um element covers general air prep; specify the 5 um option (code W) if downstream equipment needs finer filtration. Note this is the low-pressure regulator type - confirm its setting range with us before ordering if your setpoint is unusual. The embedded square gauge reads in MPa; external round gauges and psi or bar scales are options. PT is the standard thread, with G and NPT as order options; this unit is NPT and ships without a bracket.
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 GFR400 flow as performance curves rather than a single rated figure, so no single flow number, Cv or SCFM value is quoted here. Tell us your application and line conditions and we will confirm the relevant curve and sizing from the datasheet on request before you order.
The A in the code GFR40010ALJF1T specifies an automatic drain, which expels collected condensate from the bowl without manual attention - useful for unattended or hard-to-reach installations. The GFR series is also available with a manual drain or the default differential-pressure drain; ask us for those variants if they suit your maintenance routine better.
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.