The AirTAC GFR40010MLF2WGK AirTAC Filter Regulator G3/8, 5 um 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 AirTAC GFR40010MLF2WGK is a size 400 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 3/8 inch G-thread port, a fine 5 um filter element (the W grade, versus the standard 40 um), a manual drain on the PC bowl, and the low-pressure regulator type. It ships as coded with an embedded square gauge scaled in psi, a reverse/check valve fitted, and a mounting bracket included. Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scale options, and a low-pressure regulator type. Because flow is published only as curves rather than a single rated figure, we confirm flow and other datasheet figures for your application on request.
| Model | GFR40010MLF2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) 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 | Fitted (reverse flow permitted) |
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. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
A low-pressure regulator type with a 5 um element conditions and sets supply pressure for clamp cylinders on an assembly fixture, with the check valve holding the circuit against backflow.
On a cartoning or wrapping line, this filter regulator cleans and regulates the air feeding conveyor diverters and wrapper cylinders, with the manual drain bled at shift checks.
The fine 5 um grade and a psi-scaled square gauge make this unit a supply point for air-operated control components in a process panel, mounted on the included bracket.
Size and port set the capacity envelope: this unit is size 400 with a 3/8 inch G-thread port; smaller or larger sizes step port and flow capacity up or down. Drain choice matters: manual drain (as coded here) needs periodic bleeding by hand, while automatic and differential-pressure drains discharge condensate without operator action. The 5 um element (code W) suits air that is more sensitive than the 40 um standard grade. The square gauge is fitted in this code with a psi scale; MPa and bar scales and an external round gauge are alternatives. Thread is G here, with PT as the standard and NPT as an order option; a bracket is included.
One honest routing note: AirTAC publishes flow as curves, not a single rated number, and the exact regulation range of the low-pressure type is not stated on the sheet we work from. Ask us to confirm sizing and the regulation range against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves rather than a single rated figure, so we do not quote a number. Send us your line pressure and expected air demand and we will confirm the flow and sizing from the datasheet on request.
In the code GFR40010MLF2WGK, M selects the manual drain, which you bleed by hand instead of relying on automatic discharge, and W selects the optional 5 um filter element instead of the 40 um standard. If you prefer unattended condensate removal, the differential-pressure (blank) or automatic (A) drain versions are available to order.
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.