The AirTAC GFR400C10AJF1WTK AirTAC Filter Regulator NPT3/8 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 GFR400C10AJF1WTK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built with a 3/8 in NPT port, a fine 5 um filter element (code W), an automatic drain that empties collected condensate without manual attention, an embedded square pressure gauge scaled in MPa, and a reverse/check valve (code K) fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this 400 size is polycarbonate (PC); only the 600 size uses an aluminium alloy bowl. No mounting bracket is included with the J code.
This is a genuine AirTAC part in the GFR400 series, one of four sizes (200/300/400/600) with port options from 1/8 to 1 inch and a choice of PT (standard), G (BSPP) or NPT threads. Filter grade, drain type, gauge and scale, reverse valve and bracket are all orderable options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C10AJF1WTK AirTAC Filter Regulator NPT3/8 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) |
Feeds filtered, regulated air to the tool-change clamps and pneumatic actuators on a machining centre, with the 5 um element protecting tight-tolerance valves from particles and the automatic drain handling condensate through long unattended shifts.
Supplies regulated air to the cylinders that divert cartons and drive sealing jaws on a packaging conveyor, keeping actuator speed consistent as the compressor cycles, while the check valve holds the set circuit if the upstream supply dips.
Conditions the bench air feed for lab equipment and test rigs that need clean, stable low-pressure air, with the 5 um grade guarding sensitive instruments and the MPa gauge giving a clear local setpoint readout.
Choose the size and port step against the air demand of the circuit: the 400 size carries a 3/8 in port, and larger sizes move more flow - we will confirm exact flow from the published curves before you order. This unit already carries the fine 5 um element (W); if your application tolerates coarser filtration, the 40 um standard grade is available as a separate model. The automatic drain (A) suits unattended installations; manual (M) and differential-pressure (blank) drains are alternatives in the same series. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are options. NPT is specified here; PT is the catalogue standard and G (BSPP) is also orderable. The J code means no mounting bracket - order a bracket variant if you need panel fixing. Because flow is published as curves, not a single rating, 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.
AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Tell us your application and we will confirm the flow and sizing from the datasheet on request before you order.
The A code in the model sets the automatic drain, which expels collected condensate from the bowl without manual intervention - useful where the unit is mounted in a hard-to-reach spot. The K code fits a reverse/check valve, and the W code selects the fine 5 um element in place of the 40 um standard grade.
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.