The AirTAC GFR40010MLF1T 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 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 GFR40010MLF1T is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size 400 unit has NPT3/8 ports, a manual drain on the PC (polycarbonate) bowl, a 40 um standard filter element, and the low-pressure regulator type for circuits that run at reduced set pressures. An embedded square gauge with an MPa scale is fitted, a mounting bracket is included, and the unit handles a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing). The exact adjustment range of the low-pressure type is not published, so confirm it with us if your set point is critical.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options include automatic or differential-pressure draining, a 5 um element (code W), gauge scales in psi or bar, an external round gauge, and PT or G thread in place of NPT. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR40010MLF1T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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, 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". |
| 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. |
| 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) |
Feeds fixture clamps on a machining cell that hold at reduced set pressures, with the 40 um element keeping downstream spool valves free of water and swarf.
Supplies bench test rigs and gauges that need filtered air regulated gently below standard settings, with the manual drain suiting supervised lab use.
Feeds cylinder-driven carton sealers and case packers, combining water and particulate removal with low-pressure regulation so cylinders cycle consistently.
Choose the size by port and flow: size 400 with 3/8 in ports sits mid-range in the GFR line, one step above 300 (1/4 in) and below 600. Drain: this unit is manual, so the bowl must be emptied by hand at intervals; automatic or differential-pressure draining is available on other codes if that does not suit your maintenance schedule. Filter grade is the 40 um standard element; specify W for 5 um where finer particulate capture matters. The gauge here is the embedded square type reading MPa; psi or bar scales and an external round gauge are orderable. Thread is NPT on this code; PT is the standard and G is also available. A mounting bracket is included. Because flow is published as curves rather than a single 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 the GFR series as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow curve and correct sizing from the datasheet on request.
This code carries M for a manual drain: the bowl must be drained by hand at intervals. If the unit will be hard to reach, order a GFR400 variant with A (automatic) or the differential-pressure default drain instead - the rest of the specification can stay the same.
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.