The AirTAC GFR40010MLF2WT AirTAC Filter Regulator NPT3/8 5um is a genuine G-series filter regulator: water separation, 5 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 GFR40010MLF2WT is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is the size 400 unit with a 3/8 in NPT port, the fine 5 um filter element (code W), a manual drain on the polycarbonate bowl, and the embedded square gauge fitted with a psi scale. It is the low-pressure regulator type, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with your choice of drain (differential-pressure, automatic or manual), filter grade (40 um standard or 5 um), gauge scale (MPa, psi or bar), thread (PT standard, G or NPT) and bracket. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request before you order.
| Model | GFR40010MLF2WT AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a fabrication cell running air cylinders for clamping and light pressing, this unit cleans the shop air to 5 um and holds a low regulated supply pressure to the fixtures, with the psi gauge visible at the machine.
For a test bench or lab process that needs clean, finely filtered air at a controlled low pressure, the 5 um element protects sensitive instruments while the low-pressure regulator type matches circuits that run well below standard line pressure.
On a packaging line with air-actuated sealers and diverters, this filter regulator conditions the air at the machine, the manual drain lets operators clear accumulated water at shift checks, and the included bracket mounts it beside the machine's air inlet.
Size 400 with a 3/8 in NPT port sits in the upper-middle of the GFR range; step up to size 600 or down to 300 depending on the flow your line needs - we will check the published flow curves against your application on request. This unit is the low-pressure regulator type, so confirm the adjustment range suits your circuit before ordering. You have already chosen the fine 5 um element (the 40 um standard element is the alternative if finer filtration is not required), the manual drain (simplest to service, but automatic or differential-pressure drains are available if you cannot rely on someone draining the bowl), and the square gauge with a psi scale (MPa or bar scales are options). PT is the standard thread; G and NPT are order options, and this unit is specified NPT. A bracket is included for panel or surface mounting.
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 number here. Tell us your line pressure and the flow your application needs, and we will confirm against the datasheet curves whether the size 400, 3/8 in port unit is correctly sized before you order.
The M in the code specifies a manual drain: someone opens the drain at the bottom of the polycarbonate bowl to expel collected water. If the installation is not visited regularly, the same unit can be ordered with an automatic drain or the default differential-pressure drain instead - just ask, and we will quote the equivalent 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.