The AirTAC GFR400C10ALF2WGK AirTAC Filter Regulator G3/8, 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 GFR400C10ALF2WGK is an AirTAC GFR filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 400 unit is threaded G3/8 (3/8 in BSPP), built as the low-pressure regulator type, and carries a 5 um filter element (the W grade, finer than the 40 um standard), an automatic drain that clears collected condensate without manual attention, an embedded square gauge reading in psi, a reverse-flow check valve (code K) and a mounting bracket. The bowl on this configuration is metal.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, offered with manual, automatic or differential-pressure drains, 40 um or 5 um elements, embedded square gauges (MPa, psi or bar scales) or an optional external round gauge, and an optional reverse/check valve. 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 rating, so ask us to confirm sizing and the full datasheet for your application.
| Model | GFR400C10ALF2WGK AirTAC Filter Regulator G3/8, 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) |
Air preparation for a packaging machine's low-pressure actuation circuit: the 5 um element protects downstream valves, the regulator holds a low set pressure, and the automatic drain keeps condensate out of the line between shifts.
Feeding spray guns or coating heads that run at low regulated pressure: the square psi gauge gives a direct readout at the setpoint, and the built-in check valve blocks backflow toward the upstream supply.
Filtered, regulated air to clamping fixtures on a machining cell: the bracket allows fixed mounting to machine framing, the metal bowl suits a permanent install, and the automatic drain handles condensate without operator attention.
Match the size and port to the flow your line needs: this is size 400 with a 3/8 in port in G (BSPP) thread; PT is the standard thread and NPT is an order option. Drain choice matters: automatic (this unit) suits unattended installations, manual suits periodic checks, and differential-pressure is the catalogue default. Filter grade is 40 um standard or 5 um (W) where finer filtration is required - this unit carries the 5 um element. The embedded square gauge is standard with MPa, psi or bar scales (this unit is psi); an external round gauge is optional. A reverse/check valve and bracket are fitted here. Flow is published as curves, not a single rating, so send us 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 figure, so we do not quote a number here. Tell us your required flow and working pressure and we will confirm sizing from the datasheet on request.
The L code marks the low-pressure regulator type, intended for applications regulated below the standard range. The exact adjustment range for this low-pressure variant is not published in the material we hold, so we confirm it on request. Everything else decodes normally: automatic drain, 5 um element, square psi gauge, reverse/check valve and mounting bracket.
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.