The AirTAC GFR40010LJF2G AirTAC Filter Regulator G3/8 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 differential-pressure 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 GFR40010LJF2G is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a G3/8 (BSPP) port, the standard 40 um filtration element, a differential-pressure drain in the PC bowl, and low-pressure regulation suited to circuits that run at reduced set pressures. A square pressure gauge scaled in psi is fitted so the set pressure can be read directly, and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C (non-freezing). No mounting bracket is included and no reverse/check valve is fitted.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch and options including automatic or manual drains, a 5 um filter element (code W), alternative gauge scales (MPa/psi/bar) and PT or NPT threads as well as G. Flow is published in the catalogue as curves rather than a single rated figure, so ask us to confirm the flow or datasheet figures for your application before ordering.
| Model | GFR40010LJF2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, 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". |
| (blank) | Drain: Differential-pressure 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. |
| (blank) | Filtering grade 40 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. |
| (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) |
Feeds a fixture-clamping circuit on a CNC or manual machine where the clamp cylinders must hold at a reduced set pressure; the 40 um element keeps spool and seal passages clean and the psi gauge lets the setter read the clamp pressure directly.
Sits at the drop of a packaging or cartoning line to condition and regulate air for diverters, pushers and sealing cylinders, with the differential-pressure drain bleeding accumulated condensate as air flows through the bowl.
Installed ahead of a work-cell sub-header that runs below full line pressure; the low-pressure regulator type holds the reduced setting for the cell's actuators and tools while the filter section strips water and scale from the plant supply.
Start with the size/port step: the 400 frame with its G3/8 port suits lines whose air consumption sits in that band - match the port to your piping and let us confirm the flow against the catalogue curves, since no single rated-flow figure is published. For the drain, this unit uses the differential-pressure type (the default); automatic (code A) or manual (code M) drains are available if your duty calls for them. The standard element is 40 um; specify code W for 5 um where finer particulate removal is needed. The fitted square gauge is scaled in psi; MPa or bar scales and an external round gauge are alternatives. Thread is G (BSPP) here - PT is the standard thread and NPT is an order option. A mounting bracket (code J omits it) can be added if you want the unit secured independently of the piping. Because flow is published as curves rather than a rating, 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 this series as curves in the catalogue, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow from the datasheet curves for the GFR400 at G3/8 before you order.
This configuration uses the differential-pressure drain, the default for the GFR series: it discharges collected condensate from the PC bowl as air flows through the unit. If your duty suits automatic (code A) or manual (code M) draining instead, those variants can be specified - ask us for the correct code.
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.