The AirTAC GFR40010AC2WG AirTAC Filter Regulator G3/8, 5 um, Auto Drain is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a automatic 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 GFR40010AC2WG is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body, with a 3/8 inch (G3/8) G-thread port. This configuration carries the W grade 5 um filter element for finer water and particulate removal than the standard 40 um element, an automatic drain that expels collected condensate without manual attention, and a round pressure gauge reading in psi. The standard regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part. The GFR400 is the size-400 member of the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and gauge options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow data for your application on request.
| Model | GFR40010AC2WG AirTAC Filter Regulator G3/8, 5 um, Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding clean, regulated air to a machining centre's pneumatic tool-changer and clamping circuits, where the 5 um element protects fine valves from particulates and the automatic drain handles condensate without operator rounds.
Regulating the air feeding conveyor stoppers, diverters and carton-closing cylinders on a packaging line, with the psi gauge giving operators a local setpoint reading at the drop.
Conditioning a 3/8 inch branch take-off from a factory air ring main to supply pneumatic indicators and small process actuators, combining water and particle removal with a stable regulated pressure.
Choose the GFR400 size when your line runs at 3/8 inch porting and the flow demand sits above what size 300 comfortably handles; the size step up from 300 trades port and body size for flow capacity, and we can confirm the actual curve against your requirement before you order. This unit already carries the finer 5 um element (code W) - select the standard 40 um grade instead if your application does not need fine filtration. The automatic drain suits unattended or hard-to-reach installations; a manual or differential-pressure drain is available if you prefer operator-controlled or pressure-differential draining. The round psi gauge is fitted as coded; embedded square gauges and MPa or bar scales are the alternative options. The G (BSPP) thread is the order option here - PT is the standard thread and NPT is also available - and a mounting bracket is included.
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 GFR400 as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application and required flow, and we will confirm the datasheet and curve data for this exact model on request before you order.
The A in the code GFR40010AC2WG specifies an automatic drain, which expels collected condensate from the PC bowl without manual attention - useful for unattended or hard-to-reach installations. The GFR400 is also available with a manual drain (code M) or the default differential-pressure drain if you prefer a different draining method.
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.