The AirTAC GFR400C10AF1TK AirTAC Filter Regulator NPT3/8 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 GFR400C10AF1TK is a size 400 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration has a 3/8 in NPT port, a 40 um filter element, an automatic drain that ejects collected condensate without manual attention, an embedded square pressure gauge scaled in MPa, a reverse/check valve fitted, and a mounting bracket included. The polycarbonate bowl lets you see the condensate level, and the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). Operating temperature is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 inch, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (code W) filtration, gauge and scale choices, and an optional low-pressure regulator type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400C10AF1TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 a filtered, regulated air drop to the tool-changer and clamping circuit on a CNC machining centre, keeping chips and condensate out of the valves while holding a steady set pressure at the spindle-adjacent manifold.
Conditioning the air feeding cylinders and diverters on a carton packaging conveyor, where the automatic drain handles condensate on a line that runs unattended across shifts and the gauge lets operators verify set pressure at a glance.
Installed at the take-off point of a factory air main serving bench assembly stations, filtering rust and water from the header supply and regulating pressure for air tools and small actuators, with the check valve holding the downstream setting if the main dips.
Start with the port and size: this unit steps up to 3/8 in NPT in the 400 frame, which suits lines drawing more air than a 1/4 in drop can supply - match the size step to the demand of the circuit rather than the pipe already in the wall. Choose the drain to match attendance: automatic (this unit) suits unattended or hard-to-reach installations, manual suits attended checks, and differential-pressure draining is the catalogue default. Filtration is 40 um standard; specify 5 um (code W) where downstream valves or instruments need finer protection. The embedded square gauge in MPa is fitted here; an external round gauge in MPa, psi or bar scale is optional, and a reverse/check valve can be ordered. Thread is NPT on this unit; PT is the standard and G is also a catalogue option. A bracket is included. Because flow is published as curves and 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 the GFR series as performance curves, not as a single rated figure, so we do not quote a number that could mislead your sizing. Tell us your application and expected demand and we will confirm the flow figures from the datasheet on request before you order.
The A in the code GFR400C10AF1TK means the bowl drains itself: collected condensate is ejected automatically, which suits installations that are hard to reach or run unattended. Manual-drain and differential-pressure-drain versions of the same size 400 filter regulator are available in the catalogue - note that with a manual drain the regulator adjustment range widens to 0.05-0.9 MPa (7-130 psi), versus 0.15-0.9 MPa (20-130 psi) for this automatic-drain unit.
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.