The AirTAC GFR400C10ALF1WTK AirTAC Filter Regulator 3/8 in NPT 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 GFR400C10ALF1WTK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration carries a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that clears collected condensate from the polycarbonate bowl without manual attention, and a low-pressure regulator type for circuits that run below standard regulating ranges. It is fitted with the embedded square gauge scaled in MPa and a reverse/check valve (code K), and includes a mounting bracket. The port is NPT 3/8 in.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulator type, gauge and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C10ALF1WTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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 low-pressure pneumatic stamping or forming press: the 5 um element protects the press valve train from particulate and condensed water, the regulator holds the reduced pressure the press controls were set up for, and the automatic drain keeps the bowl clear across shifts.
Supplying filtered, regulated air to conveyor stopper and pusher cylinders on a packaging line. The automatic drain handles condensate from humid plant air, and the 3/8 in NPT port matches the line's drop piping without adapters.
Conditioning air for a laboratory automation or sample-handling rig that runs at reduced pressure: the low-pressure regulator type matches circuits below standard regulating ranges, the 5 um grade suits sensitive pneumatic components, and the MPa gauge gives a direct local read.
Size 400 with a 3/8 in NPT port sits in the upper-middle of the GFR range; step up to size 600 or down to size 300 depending on the flow your line needs - we can check the published flow curves against your demand. This unit is already specified with the 5 um element (W); the standard grade is 40 um if your application does not need finer filtration. The automatic drain suits unattended installations; manual and differential-pressure drain versions are also available in this family. The low-pressure regulator type is chosen where the circuit runs below standard regulating ranges - we will confirm the exact adjustment range from the datasheet on request. The square gauge is scaled in MPa; psi and bar scales and an external round gauge are options. PT is the standard thread for this family, with G (BSPP) and NPT as catalogue options - this unit is ordered with NPT. A mounting bracket is included.
Because flow is published as curves rather than a single rated figure, 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, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, set pressure and air demand and we will confirm the flow from the datasheet curves for this size 400, 3/8 in unit before you order.
W is the filter grade code: this unit carries the 5 um element instead of the 40 um standard, for finer removal of particulate ahead of downstream equipment. The A in the code is the automatic drain, which expels collected condensate from the bowl by itself - useful where the unit is mounted in a position that is awkward to reach for 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.