The AirTAC AirTAC GFR400C10AC2WK Filter Regulator, 3/8 in, 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 GFR400C10AC2WK is a size-400 filter regulator: it removes water and particulate down to 5 um and regulates downstream pressure in one body. This configuration has a 3/8 in PT port, an automatic drain that expels collected condensate without manual attention, a round pressure gauge reading in psi, and a built-in check (reverse-flow) valve. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and with the automatic drain the regulator setting range is 0.15-0.9 MPa (20-130 psi). The bowl on the 400 size is polycarbonate, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR series is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT (standard), G (BSPP) or NPT threads, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, and gauge or no-gauge options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | AirTAC GFR400C10AC2WK Filter Regulator, 3/8 in, 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) |
Point-of-use supply for an air-operated press or clamping fixture on a 3/8 in line: the regulator holds a steady setting to the cylinder valve while the 5 um element and automatic drain keep water and fines out of the directional valve.
Feeding gripper and divertor actuators along a packaging conveyor, where the check valve holds the downstream setting against momentary upstream dips and the automatic drain copes with a drop point nobody visits during a shift.
Regulated, filtered air for blow-off nozzles and chip-clearing jets on a CNC cell: the 5 um grade protects fine orifice nozzles from particulate, and the psi gauge lets the setter read the setting directly in shop units.
Within GFR400 the port step is your first decision: this unit is 3/8 in PT, and you step up to size 600 or down to size 300 if the flow curve for your line says so. Drain type matters in practice: automatic (this unit) suits unmanned or hard-to-reach installations, manual suits attended drop points, and differential-pressure drain is the catalogue default. Filtration here is 5 um (code W) against the 40 um standard - choose 5 um where sensitive downstream components need cleaner air. The round gauge reads psi; an embedded square gauge and MPa or bar scales are the alternatives. G (BSPP) and NPT threads are order options alongside the PT standard, and the mounting bracket is included.
Flow for the GFR series is published as curves, not a single rated number, so send us your air demand 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, not as a single rated figure, so we do not quote one number here. Tell us your line pressure and air demand and we will confirm the sizing against the datasheet on request before you order.
The A in this code is the automatic drain: it expels collected condensate by itself, which suits unmanned or hard-to-reach installations (manual and differential-pressure drains are the other catalogue choices). The K is a built-in reverse-flow (check) valve, and the W sets filtration to 5 um instead of the 40 um standard.
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.