The AirTAC GFR400C10AJF2WGK AirTAC Filter Regulator G3/8, 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 GFR400C10AJF2WGK is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This size 400 unit is threaded G3/8 (BSPP), carries the finer 5 um filter element, and has an automatic drain that ejects collected condensate without anyone opening the bowl - useful on lines that run unattended. A built-in check valve holds downstream pressure if the supply side drops, and the embedded square gauge is scaled in psi for direct reading at the machine. The standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), the maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl and body are rated for -5 to 70 C (non-freezing), and the unit is supplied without a mounting bracket.
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 the catalogue offers manual or differential-pressure drains, a 40 um standard element, gauge scales in MPa, psi or bar, an optional external round gauge, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C10AJF2WGK AirTAC Filter Regulator G3/8, 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) |
Feeding spray guns and air-assisted applicators on a paint line, where the 5 um element protects finish quality from water and particulate and the regulator holds a steady gun pressure read directly off the psi gauge.
Supplying the cylinders and grippers on a carton-forming or case-sealing conveyor, with the automatic drain handling condensate on a line that runs through shifts without an operator at the drop.
Regulating clean, settled pressure to pneumatic test rigs and instrument panels in a lab or QC bench, where the check valve keeps the setpoint stable if the shop supply dips mid-test.
Size 400 with a G3/8 thread sits in the upper-middle of the GFR range; step down to size 300 or up to size 600 depending on the air demand of the circuit - we can check the published flow curves against your requirement before you commit. The 5 um element (code W) is the right choice when downstream valves, cylinders or instruments need finer filtration than the 40 um standard; remember that finer elements hold more dirt and need drain attention sooner. The automatic drain suits installations that run unattended or are awkward to reach; manual and differential-pressure drains are available elsewhere in the family. The gauge here reads in psi; MPa and bar scales can be ordered, and an external round gauge is an option. G thread is BSPP; PT and NPT versions exist in the catalogue. If you panel- or wall-mount the unit, order a bracket variant, since this configuration (code J) comes without one.
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 number, so we do not quote a l/min or SCFM figure on the page. Tell us your working pressure and the air demand of the circuit, and we will confirm the sizing against the datasheet curves for this size 400 unit before you order.
A is the automatic drain, so condensate is ejected from the bowl on its own and the unit suits unattended installations. W is the 5 um filter element, finer than the 40 um standard. F2 is the embedded square gauge scaled in psi. K means a reverse (check) valve is fitted, which holds downstream pressure if the supply side is lost.
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.