The AirTAC GFR400C10ALF2WG 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 AirTAC GFR400C10ALF2WG is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in one body. This 400-size unit is threaded G3/8 (BSPP), carries a 5 um element for finer filtration than the standard 40 um grade, and drains condensate automatically, so the bowl does not need to be emptied by hand. The regulator is the low-pressure type, and a square pressure gauge scaled in psi is fitted; a metal bowl and a mounting bracket are included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow for GFR units 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 | GFR400C10ALF2WG 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) |
Filtered, low-pressure-regulated air to swing clamps and ejector cylinders on a CNC machining cell, keeping chips and condensate out of the valves while holding a gentle, repeatable clamp pressure.
Supplying spray guns and atomising nozzles on a paint or coating line, where the 5 um element protects fine orifices and the low-pressure regulator holds the delicate atomising pressure the finish needs.
Air for gate and stopper actuators along a bottling or packaging conveyor, with the automatic drain clearing condensate at a point nobody wants to open and empty by hand.
The real choices in this family are the size and port step, matched to the flow your line needs - here size 400 with a G3/8 port; the drain type, where automatic (as coded) suits points that are hard to reach while manual or differential-pressure drains suit others; the filter grade, 40 um standard or 5 um (W) for finer protection, as fitted here; the gauge and its scale - this unit carries a square gauge in psi, with MPa or bar scales and an external round gauge available; the thread, where PT is the standard and G or NPT are order options; and the bracket, included on this unit. Because AirTAC publishes flow as curves rather than a single rated figure, send us your air demand 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 air demand and operating pressure and we will confirm the flow and sizing from the datasheet before you order.
The L in the code marks the low-pressure regulator variant, intended for downstream pressures below what the standard type targets. The exact adjustment range for this variant is not published in the material we hold, so we confirm it from the datasheet on request. Everything else is decodable from the code: 5 um element, automatic drain, square psi gauge, G3/8 port and included 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.