The AirTAC AirTAC GFR40010AF2G Filter Regulator 3/8 in G-Thread 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 GFR40010AF2G is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one 3/8 in (G/BSPP) connection handles both jobs. This configuration carries a 40 um standard filter element, an automatic drain that expels collected condensate from the polycarbonate bowl without manual attention, and a square pressure gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR400 size class. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element option, gauge scale options, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application.
| Model | AirTAC GFR40010AF2G Filter Regulator 3/8 in G-Thread |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) 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 | Fitted — square, 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding filtered, regulated air to the pneumatic clamps, tool-change cylinders and air-blast nozzles on a CNC cell, with the automatic drain keeping condensate out of the bowl during unattended shifts.
Conditioning the air feeding conveyor stoppers, carton-closing cylinders and bagging heads on a packaging line, where one 3/8 in drop serves several actuators and the psi gauge lets operators set line pressure at a glance.
Supplying regulated air to impact drivers, nutrunners and air ratchets at a bench assembly station, with the 40 um element and automatic drain protecting tools from water and pipe scale between shifts.
Start with the port step: this unit is size 400 with a 3/8 in G thread, one step up from 1/4 in, so choose it where your line carries more air than a 300-size unit is sized for. Drain type is a real choice: automatic (this unit) suits unmanned or hard-to-reach installations, manual drain suits attended stations, and the differential-pressure default drains on a pressure drop. Filter grade is 40 um standard here; specify the 5 um W option only where downstream equipment needs finer filtration. Gauge scale (MPa, psi or bar - this unit reads psi), thread family (PT standard, G or NPT to order) and the included mounting bracket complete the decode. Because flow is published as curves, not a single rated figure, ask us to confirm sizing against your application before ordering.
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 rated flow, Cv or SCFM number. Tell us your application and we will confirm the flow and datasheet figures for this 3/8 in size-400 unit on request before you order.
This configuration is coded with an automatic drain, which expels collected condensate from the bowl on its own - useful where the unit is mounted out of reach or the line runs unattended. The GFR family is also available with a manual drain or the differential-pressure default drain; specify the code variant you need when ordering.
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.