The AirTAC GFR400C10AC2WG AirTAC Filter Regulator G3/8 5um Auto Drain 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 GFR400 series combines filtration and pressure regulation in a single body: compressed air passes a 5 um element that removes water and particulate, then a standard regulator sets downstream pressure anywhere in the 0.15-0.9 MPa (20-130 psi) range. This configuration is the 400 size with a G3/8 port (G thread; PT and NPT are orderable thread options), automatic drain, a round gauge on a psi scale, a polycarbonate bowl and the mounting bracket included.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, drain choices (differential-pressure, automatic or manual), 40 um standard or 5 um filtration, gauge and thread options, and a maximum inlet pressure of 1.0 MPa (145 psi) with a working temperature of -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR400C10AC2WG AirTAC Filter Regulator G3/8 5um Auto Drain |
|---|---|
| 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) |
Filtered, regulated air to a CNC machine tool's actuators and tool-clamp circuits, with the 5 um element protecting fine-clearance components and the automatic drain clearing condensate from the bowl.
Point-of-use conditioning on a bottling or cartoning line: the regulator holds a stable downstream setting for pick-and-place cylinders and grippers while the auto drain keeps the bowl free of accumulated water.
A dedicated drop feeding a pneumatic press or forming station, where the 5 um grade guards the valve train and the psi-referenced round gauge lets operators set and verify the working pressure at the machine.
Size 400 with a 3/8 in port sits in the upper-middle of the GFR range (200/300/400/600); step up or down a size when the flow curve for your demand calls for it. The choices decoded on this unit are: automatic drain (condensate ejects without manual attention), the 5 um element instead of the standard 40 um, a round gauge on a psi scale, G thread (PT is the standard thread, NPT is also orderable), bracket included, standard regulator type. Note that the automatic-drain regulation range is 0.15-0.9 MPa (20-130 psi); manual-drain versions widen this to 0.05-0.9 MPa (7-130 psi). Flow is published as curves, not a single rated figure, so 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.
Flow for the GFR400 is published as curves, not as a single rated figure, so we do not quote a number. Send us your air demand and we will confirm from the AirTAC datasheet whether size 400 at G3/8 suits your application.
The W code selects the 5 um filter element instead of the standard 40 um, and the A code selects the automatic drain, which ejects bowl condensate without manual attention. With automatic drain the regulator adjusts 0.15-0.9 MPa (20-130 psi); manual-drain versions widen the range to 0.05-0.9 MPa (7-130 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.