
The AirTAC AirTAC GFR400-10 Filter Regulator (GFR40010AN) 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 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 AirTAC GFR400-10A-N is a G-series filter regulator: filtration and pressure regulation combined in a single body, with a drain bowl but no lubricator. This configuration is size 400 with a 3/8in PT port, fitted with an automatic drain that expels collected condensate without manual attention, and the standard 40 um filter element. With no gauge fitted, downstream pressure is set with a tool against the adjustment spring. The regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with automatic drain, and the maximum working pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part from the G series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8in to 1in, a choice of differential-pressure, automatic or manual drains, and standard 40 um or optional 5 um (W) elements. Flow figures for this series are published as curves rather than a single rating, so we confirm the datasheet and flow curve for your application on request.
| Model | AirTAC GFR400-10 Filter Regulator (GFR40010AN) |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Installed as the first-stage conditioning point on an air preparation panel, cleaning the incoming shop air and holding a set pressure to the valves and cylinders downstream.
Conditioning air for the cylinder-driven tensioners and diverters on a packaging conveyor, with the automatic drain coping with condensate on a line that runs unattended.
Mounted at the wall drop feeding a workbench or cell in a manufacturing plant, giving each station its own filtered and regulated supply off the main ring main.
Size 400 with a 3/8in PT port sits in the middle of the G series: step up to 600 or down to 300/200 depending on the pipe run and the flow your line needs. The automatic drain suits enclosed panels or elevated installs where nobody walks past to pull a bowl drain; choose manual if you want condensate removal only on demand. The standard 40 um element protects general pneumatic equipment, while the optional 5 um (W) element suits finer applications; with the N suffix this unit ships without a gauge, but gauge options exist elsewhere in the series.
Flow is published as curves, not a single rated figure, so ask us to confirm sizing against your application before ordering. PT is the standard thread here; G (BSPP) and NPT versions are catalogue options you can 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 G series as curves rather than a single rated figure, so we do not quote one number here. Contact us and we will confirm the datasheet and flow curve for the GFR400-10A-N so you can check it against your application before ordering.
The A in the code means condensate collected in the PC bowl is discharged automatically, with no manual draining. It is the right choice for enclosed or hard-to-reach installs; if you prefer to drain on demand, a manual-drain (M) version is available in the series.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.