The AirTAC GFR400C10MC3WTK 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 GFR400C10MC3WTK is an AirTAC GFR400 filter regulator: a 5 um filter element and a pressure regulator combined in one body, so a single unit removes water and particulate from the air line and holds a set downstream pressure. This configuration is a size 400 unit with a 3/8 in NPT port, a manual drain on the polycarbonate bowl, the finer 5 um filter element, a round pressure gauge reading in bar, a built-in reverse (check) valve, and a mounting bracket included. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and maximum inlet pressure is 1.0 MPa (145 psi).
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and offers a choice of drain type, filter grade (40 um standard, 5 um optional), gauge style and scale, thread (PT standard, with G and NPT as order options), and reverse valve. Operating temperature is -5 to 70 C (non-freezing). Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures against your application.
| Model | GFR400C10MC3WTK 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 filtered, regulated air to the clamping cylinders on a CNC machining fixture, where a steady set pressure keeps clamp force consistent from part to part and the 5 um element protects the directional valves.
Supplying clean, regulated air to the gate and divertor cylinders that route product between lanes on a packaging or sorting conveyor, with the check valve holding the set circuit if upstream pressure dips.
Providing regulated air to the actuated fixtures and cylinders on a laboratory or quality-control test rig, where the 5 um grade and a bar-reading gauge suit instrumented, repeatable set-ups.
The real choices in this family are the size and port step (200/300/400/600, 1/8 in to 1 in) matched to the air demand of your circuit; the drain type (differential-pressure as standard, automatic, or manual as fitted here); the filter grade (40 um standard, 5 um optional, as on this unit); the gauge and its scale (MPa, psi or bar - this unit carries a round gauge in bar); the thread (PT is the standard, G and NPT are order options); and whether to fit a reverse/check valve, which this configuration includes. Flow is published as curves, not a single rating, so send us your pressure and air-demand figures and we will confirm sizing from 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 rather than a single rated figure, so we do not quote one number. Tell us your working pressure and air demand and we will confirm the flow from the datasheet for this size 400, 3/8 in unit before you order.
This unit has a manual drain: condensate in the bowl is emptied by hand, which suits installations that are checked regularly or shut down between shifts. If the unit will run unattended, the automatic or differential-pressure drain options remove the need for routine manual draining.
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.