The AirTAC AirTAC GFR400C10MF2WK Filter Regulator PT3/8, 5 um 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 See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400C10MF2WK is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 3/8 in PT port, a fine 5 um filter element (code W), a manual drain on the polycarbonate bowl, an embedded square gauge scaled in psi, a built-in reverse/check valve, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard-type regulator adjusts from 0.05 to 0.9 MPa (7-130 psi, the wider range available with manual drain), and the operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, gauge style and scale options, and G (BSPP) or NPT threads as order options. Flow is published as curves rather than a single rating, so ask us to confirm the figures and datasheet for your application on request.
| Model | AirTAC GFR400C10MF2WK Filter Regulator PT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Filtering and regulating the shop-air feed to a CNC machine tool's pneumatic tool-changer and clamping circuits, with the 5 um element protecting fine valves from particulate and the psi gauge giving operators a local setpoint readout.
Conditioning air ahead of the cylinders and diverters on a carton packaging conveyor, where the regulator holds a steady pressure for consistent box sealing and the manual drain is serviced during scheduled line stops.
Supplying filtered, regulated air to the gripper and clamp valves in a robotic welding cell, with the built-in check valve helping hold the downstream circuit if upstream pressure is lost.
Start with the port step: this unit is size 400 with a 3/8 in PT port; step up or down (200/300/400/600) if your line needs a different connection or capacity class. Because flow is published as curves, not a single rating, ask us to confirm sizing against your air demand before ordering. On filtration, 40 um is the standard element and the 5 um (W) element fitted here suits finer downstream needs. On drain choice, manual drain means someone opens the bowl drain during maintenance; automatic and differential-pressure drains are available if you cannot rely on manual blowdown. The embedded square gauge here reads in psi; MPa and bar scales and an external round gauge are options. Thread is PT as standard, with G (BSPP) and NPT as catalogue options, and a bracket is included with this unit.
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 number, so we do not quote a figure. Tell us your line pressure, set pressure and air demand, and we will confirm the sizing and the flow/datasheet figures for this exact model on request.
The M in the code means the polycarbonate bowl is drained by hand during maintenance. The same series is also available with automatic or differential-pressure drains; note that the manual-drain version supports the wider 0.05-0.9 MPa (7-130 psi) regulation range, while automatic and differential-pressure drain versions start at 0.15 MPa (20 psi).
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.