The AirTAC GFR400C10AF2WTK 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 GFR400C10AF2WTK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady across the 0.15-0.9 MPa (20-130 psi) adjustment range. This configuration takes a 3/8 in NPT port, carries the finer 5 um filter element, drains condensate automatically from the polycarbonate bowl, and is fitted with an embedded square gauge reading in psi. A reverse/check valve is fitted and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of drain type, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT thread. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10AF2WTK 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) |
Feeding clean, regulated air to the tool-change and clamping circuits of a CNC machining center: the 5 um element keeps particulate out of directional valves, and the psi gauge gives setters a setpoint they can read at the drop.
Regulating air to grippers and seal cylinders on a carton-forming and sealing line, where the automatic drain clears condensate between shifts without an operator visiting each drop, and the check valve holds settings if supply pressure dips.
Supplying regulated air to spray guns in an automotive refinish booth: as a filter regulator it cleans and stabilises the supply without adding lubricator mist, which paint work cannot tolerate.
Step up through sizes 200, 300, 400 and 600 by port and flow demand - this unit sits at 3/8 in NPT, so move to size 600 if your consumption sits near the top of a smaller unit's curve. Drain type is a real decision: automatic drain (fitted here) suits unattended installations, while manual and differential-pressure drains are the catalogue alternatives. Filtration is 5 um here against the 40 um standard; take the finer grade where downstream valves and instruments need cleaner air. The gauge is the embedded square type on a psi scale, with MPa or bar scales and an external round gauge available as options. Thread is NPT on this model - PT is the standard thread and G is also orderable - and a mounting bracket is included. Flow is published as curves, not a single rating, so send us your 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 this series as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the flow from the datasheet for this exact 3/8 in, 5 um configuration before you order.
The A in the code sets the automatic drain: condensate is expelled from the polycarbonate bowl without manual attention, which suits drops that run unattended. The same GFR400 body is available with a manual or differential-pressure drain, and with the 40 um standard element instead of the 5 um fitted here - tell us which you need and we will quote the matching code.
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.