The AirTAC GFR400C10ALC1WTK 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.
GFR400C10ALC1WTK is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and regulates the downstream pressure behind it. This configuration sits on the size 400 frame with a 3/8 in NPT port, the finer 5 um filter element, an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type. It carries a round external gauge reading in MPa, a fitted reverse (check) valve, and a mounting bracket. The bowl is polycarbonate at this size (only the 600 size uses aluminium alloy), and the unit is rated for compressed air at up to 1.0 MPa (145 psi) inlet in a -5 to 70 C, non-freezing environment.
This is a genuine AirTAC part. The GFR family runs from size 200 to 600 with ports from 1/8 to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, and square or round gauges in MPa, psi or bar scales. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before you order.
| Model | GFR400C10ALC1WTK 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) |
Feeds the clamp and fixture cylinders on a CNC machining cell: the 5 um element keeps directional and check valves clean while the regulator holds a steady clamp circuit behind it.
Supplies the diverter and stopper cylinders along a parcel-sort conveyor; the automatic drain clears condensate where bowls are awkward to reach, and the fitted reverse valve prevents backflow toward the supply side.
Provides filtered, regulated pilot air to actuated ball and butterfly valves on a water-treatment skid; the low-pressure regulator type and round MPa gauge suit lower set-point pilot circuits.
Every meaningful choice in this code is decodable. Size 400 with a 3/8 in NPT port sits mid-range in the GFR line-up: step up or down a size when your flow demand differs, and match the thread to your piping (PT is the standard; G and NPT are order options). The 5 um W-grade element suits air feeding sensitive valves and cylinders; the standard grade is 40 um. The automatic drain removes condensate on its own, which matters where bowls are hard to reach; the alternatives are the differential-pressure default and a manual drain. The round MPa gauge is the external option here, while an embedded square gauge is the standard fitting and psi or bar scales can be ordered. The low-pressure regulator type is intended for lower set-point work; its exact adjustment range is not published in the standard table, so confirm it with us. AirTAC publishes flow as curves, not a single rating, so send your flow and pressure requirements 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 the GFR series as curves rather than a single rated number, so there is no one figure we can honestly quote. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
The W code orders the finer 5 um element instead of the 40 um standard, which suits downstream valves and cylinders that need cleaner air. The A code fits the automatic drain, so collected condensate is ejected without manual attention; the alternatives are the differential-pressure default and a manual drain. Both choices are fixed in the model code, so order the variant that matches your line.
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.