The AirTAC GFR40010MLJC2G 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010MLJC2G is a GFR-series filter regulator: it removes water and particulate from compressed air and holds the downstream pressure at a set point, in one body. This size 400 unit has a G3/8 port, a manual-drain bowl in polycarbonate, the standard 40 um filter element, the low-pressure regulator type, a round gauge reading in psi, and no mounting bracket or reverse/check valve fitted.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options, plus a choice of drain type, 40 um or 5 um filtration, gauge style and scale. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR40010MLJC2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| (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) |
Filtered, regulated air at a low set point holds clamp cylinders on a CNC fixture steady through the cycle, while the 40 um element keeps scale and pipe debris out of the clamp valves.
A filter regulator ahead of the seal and fold actuators on a packaging machine keeps moisture out of the seals and holds the working pressure the machine was set up with.
Clean, regulated supply air to gripper manifolds and small tooling valves on a robotic assembly cell, with the psi round gauge giving operators a visible set point at the cell.
Size and port set the air capacity: this unit is size 400 with a G3/8 port, and the family steps through sizes 200-600 if your line needs more or less flow. Drain is manual here - open the bowl valve periodically to release collected water; automatic and differential-pressure drains are available on the same size if regular servicing is not practical. The element is the 40 um standard grade; specify the W option for 5 um where finer filtration is needed. The round gauge reads psi; the embedded square gauge and MPa or bar scales are options. Thread: PT is the AirTAC standard and G or NPT are order options - this code carries G. No mounting bracket is fitted (code J); order one if you panel-mount. Flow is published only 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 this series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, port size and application details and we will confirm the datasheet curves and correct sizing before you order.
This unit carries code M: you open the drain valve on the bowl by hand to release collected water, so it suits installations that are checked during normal maintenance rounds. If the unit will sit where it cannot be serviced regularly, ask us about the automatic (A) or differential-pressure drain versions of the same GFR400 size.
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.