The AirTAC GFR400C10AF2W AirTAC Filter Regulator PT3/8 5 um 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 GFR400C10AF2W is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one body. This size 400 unit is threaded PT3/8, carries the finer 5 um filter element (code W, versus the standard 40 um), and has an automatic drain that expels collected condensate without manual attention. The standard-type regulator adjusts from 0.15-0.9 MPa (20-130 psi), a square pressure gauge in psi is fitted, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl on this size 400 frame is polycarbonate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and each size can be ordered with manual, automatic or differential-pressure draining, a 40 um or 5 um element, square or round gauges in MPa, psi or bar scales, G or NPT threads in place of PT, and with or without a bracket. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing or send the datasheet before you order.
| Model | GFR400C10AF2W AirTAC Filter Regulator PT3/8 5 um 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) |
Point-of-use conditioning ahead of a CNC machine's pneumatic clamps and tool-change circuits: the 5 um element keeps fine debris out of tight-tolerance valves while the regulator holds a steady setpoint for repeatable clamping force.
Feeding pick-and-place cylinders and diverters on a packaging conveyor: clean, regulated air keeps stroke timing consistent through a shift, and the automatic drain handles condensate on a line that runs unattended.
A filter regulator at each drop leg on an automotive assembly line so impact drivers and pneumatic presses see the same pressure regardless of header fluctuations, with the psi gauge letting technicians verify setpoints at a glance.
Choose the size by the flow your line needs: 200, 300, 400 and 600 step up in port and capacity, and this 400 sits at PT3/8. Drain type is a real decision - automatic draining suits points you cannot visit often, manual suits attended stations, and the differential-pressure default drains only as the element loads up. Filter grade: 40 um is the standard element, while the 5 um W grade fitted here protects downstream valves, cylinders and instruments that need cleaner air. Gauges can be square (embedded) or round (external) with MPa, psi or bar scales, and PT is the standard thread with G (BSPP) and NPT available to order. Flow for the GFR series is published as curves, not a single rating, so send us your application and we will confirm sizing against the datasheet before you order.
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 rather than a single rated figure, so there is no one number we can quote. Tell us your working pressure and air demand and we will confirm sizing from the datasheet on request.
The W-grade 5 um element on this unit captures finer particulate and protects precision valves, cylinders and instruments downstream. The standard grade is 40 um; both grades are orderable across the GFR range.
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.