The AirTAC AirTAC GFR400-15ALJC1T Filter Regulator NPT1/2 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 GFR400-15ALJC1T is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in a single 400-size body. This configuration is threaded NPT1/2, drains condensate automatically, carries the standard 40 um filter element and is the low-pressure regulator type. It is supplied with a round pressure gauge scaled in MPa and no mounting bracket (code J). Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with a choice of PT, G (BSPP) or NPT thread, differential-pressure, automatic or manual drain, 40 um or 5 um (W) filtration, standard or low-pressure regulation, and round or square gauges scaled in MPa, psi or bar. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application on request.
| Model | AirTAC GFR400-15ALJC1T Filter Regulator NPT1/2 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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 — 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. |
|---|---|
| 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). |
| C | Gauge shape: Round. 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Conditioning shop air feeding spray guns in a finishing booth: the 40 um element strips water and pipe scale before the air reaches the gun, while the regulator holds a steady set point so finish quality does not wander with header pressure swings.
Filtering and regulating the air that feeds clamp cylinders on a CNC fixture: clean air protects seal faces, and consistent regulated pressure keeps clamping force repeatable part after part.
Supplying filtered, regulated air to diverter and pusher cylinders on a carton handling line, with the automatic drain clearing collected condensate between shifts without an operator having to bleed the bowl.
Size steps through 200, 300, 400 and 600; this 400-size unit takes a 1/2 in port, so step up a size if your line needs more flow capacity. Drain choices are differential-pressure (the catalogue default), automatic (this model, code A) and manual (code M) - automatic suits installations that run unattended. Filtration is 40 um standard; specify W for the 5 um element where finer protection is needed. The round gauge on this unit reads in MPa (scale 1); the embedded square gauge and psi or bar scales are the alternatives. Thread here is NPT, with PT as the catalogue standard and G (BSPP) orderable as a specification option. This model omits the mounting bracket (code J); bracketed versions are available. Regulation is the low-pressure type (code L) rather than the standard type - tell us your set-point range and we will confirm suitability from the datasheet. 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. 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 as a single rated figure, so we do not quote a number here. Tell us your application and required flow and we will confirm sizing against the AirTAC datasheet on request before you order.
This model has an automatic drain (code A), which ejects collected condensate without operator attention. The catalogue default is a differential-pressure drain, and a manual drain (code M) is also available where an operator can bleed the bowl on a schedule. The regulator adjustment range is quoted per drain type on the standard units, so confirm the figures for your configuration with us.
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.