The AirTAC AirTAC GFR40010MLF2G Filter Regulator 3/8 in 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 GFR40010MLF2G is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type, fitted with a manual drain, a 40 um standard filter element, an embedded square gauge scaled in psi, and a G (BSPP) 3/8 in port. The manual drain lets an operator empty collected condensate on a chosen schedule, and the mounting bracket is included for secure panel or frame installation.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge scale options, and a low-pressure regulator type. Because flow is published as curves rather than a single rating, we confirm the datasheet and flow figures for your application on request.
| Model | AirTAC GFR40010MLF2G Filter Regulator 3/8 in 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 — 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". |
| 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. |
| (blank) | Mounting bracket included. |
| (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) |
Feeding clamp and hold-down cylinders on a machining or assembly fixture where the operator sets a reduced downstream pressure; the filter section keeps debris out of the clamp valves and the psi gauge gives a direct reading at the fixture.
Mounting at the inlet of a packaging line's actuator manifold, conditioning the plant air and holding a low regulated setting for gentle bag-forming or sealing motions, with the manual drain emptied during changeover.
Supplying bench-top process or coating equipment that requires filtered air at a low, stable setting; the 40 um element protects sensitive downstream components and the included bracket allows tidy panel mounting near the point of use.
Start with size and port: the 400 series with its 3/8 in G thread suits lines where larger supply piping feeds multiple downstream devices, but always size against required flow rather than port alone. This unit is the low-pressure regulator type - choose it where the process calls for reduced downstream pressure settings rather than the standard range; the exact adjustment window for the low-pressure type is not published, so ask us to confirm it before ordering. The manual drain here suits attended installations where an operator can bleed condensate regularly; specify automatic or differential-pressure drain for unattended duty. The 40 um element is the standard grade for general plant air - select the 5 um (W) element where finer particulate removal is needed. The square gauge is scaled in psi; MPa and bar scales and an external round gauge are alternatives, and PT or NPT threads can be ordered instead of G. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing before you order.
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 GFR series as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Tell us your operating conditions and we will confirm the flow figures from the datasheet for this exact model on request.
The M in the code selects a manual drain: condensate collected in the polycarbonate bowl is released by hand, which suits attended installations on a regular maintenance schedule; automatic or differential-pressure drains are available for unattended duty. The F2 selects the embedded square gauge scaled in psi, with MPa and bar scales and an external round gauge available as options.
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.