The AirTAC GFR400C10AC2WTK AirTAC Filter Regulator NPT 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 GFR400C10AC2WTK is an AirTAC GFR400 filter regulator, combining water and particulate filtration with pressure regulation in a single body. This configuration is built for 3/8 in NPT ports and carries the 5 um filter element (code W) instead of the standard 40 um, an automatic drain that bleeds collected condensate without manual attention, a round gauge reading in psi, a reverse/check valve, and a mounting bracket. The polycarbonate bowl suits the 400 size, maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15-0.9 MPa (20-130 psi) with the automatic drain, and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600, with PT (standard), G and NPT thread options, differential-pressure, automatic or manual drains, 40 um or 5 um elements, gauge choices and scales, and an optional reverse/check valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C10AC2WTK AirTAC Filter Regulator NPT 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) |
Feeds filtered, regulated air to the clamping cylinders and pneumatic valves on a machining centre fixture, where the 5 um element helps protect fine valve internals and the check valve holds the set circuit condition.
Supplies regulated air to the stoppers, pushers and diverter cylinders along a packaging conveyor, with the automatic drain clearing condensate on a line that runs through shifts without an operator at the drop.
Conditions the compressed air feeding bench-top analytical and test instruments, where the 5 um grade, a stable regulated pressure read on the psi gauge and clean bowl drainage support consistent instrument operation.
Start with the port step: the 400 size with 3/8 in ports sits in the middle of the GFR range (200/300/400/600), so step up or down according to the air demand of the circuit - the larger the size, the larger the port and the flow path. This unit already carries the 5 um element; choose 5 um where downstream equipment needs finer filtration, or the 40 um standard where general protection is enough. Drain type matters: automatic (fitted here) suits unattended installations, manual suits periodic checks, and the differential-pressure default suits standard duty. Gauge scale can be MPa, psi or bar, and the round external gauge shown here is optional against the embedded square gauge. Thread is NPT on this unit; PT is the standard and G is also an order option. A bracket is included and the reverse/check valve is fitted.
Because flow is published as curves and not as a single rated number, 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 the GFR series as curves rather than a single rated figure, so no one number covers every pressure and setting. Tell us your line pressure, set pressure and expected air demand, and we will confirm the sizing from the datasheet on request before you order.
The automatic drain (code A) discharges collected condensate from the polycarbonate bowl on its own, so the unit suits installations that are not checked daily. With an automatic drain the regulator adjusts from 0.15-0.9 MPa (20-130 psi); the manual-drain variant widens that to 0.05-0.9 MPa (7-130 psi) if you need settings below 0.15 MPa.
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.