The AirTAC GFR40010AJC2G AirTAC Filter Regulator G3/8, Auto Drain 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 GFR40010AJC2G is a GFR400-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single compact body. This configuration is built around a G3/8 (BSPP) port in the size-400 frame, with an automatic drain that ejects collected condensate from the polycarbonate bowl without anyone having to open it - a good fit for points of use that are not checked daily. The 40 um standard element handles general-purpose air preparation, and the fitted round gauge reads outlet pressure in psi so operators can verify settings at a glance. The standard regulator covers an adjustment range of 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 GFR filter-regulator family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT available to order, a choice of differential-pressure, automatic or manual drain, an optional 5 um (code W) element, square or round gauges with MPa, psi or bar scales, and bracket options. Rated flow for this series is published as curves rather than a single figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010AJC2G AirTAC Filter Regulator G3/8, Auto Drain |
|---|---|
| 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 — 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. |
| J | Supplied without bracket. |
| (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. |
| (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) |
Point-of-use preparation at a machining centre: the automatic drain keeps condensate out of the supply to spindle-clamp and tool-change actuators, while the regulator holds a steady setting on the psi gauge through the shift.
Feeding pneumatic cylinders and diverters on a bottling or cartoning conveyor: the 40 um element stops pipe scale and water reaching the valves, and the regulator pins actuator pressure so stops and pushes stay repeatable.
Supplying a compact gripper and vacuum-ejector skid in a laboratory or small-batch assembly setting: the G3/8 filter regulator conditions the air at the frame, and the automatic drain suits equipment that runs unattended.
Start with the size and port: GFR comes in sizes 200, 300, 400 and 600, stepping up in port and flow capacity, and this unit sits at size 400 with a G3/8 port - match the step to the air demand of the circuit it feeds, and we will confirm the flow curves against your requirement. Next choose the drain: automatic (fitted here) suits unattended or hard-to-reach installations, manual suits routinely attended points, and differential-pressure draining is the catalogue default. Filter grade is 40 um as standard; specify the W code for 5 um where finer particulate capture matters. Gauge choices are the embedded square gauge or an external round gauge (this unit carries the round type) in MPa, psi or bar scales - psi is fitted here. Thread is PT as standard with G (BSPP) and NPT as order options; this unit is built with G. Bracket inclusion is optional - this configuration is supplied without a bracket. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application 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 there is no one l/min or SCFM number we can honestly quote. Send us your air demand and line conditions and we will confirm the sizing from the datasheet curves on request before you order.
The A in the code GFR40010AJC2G specifies an automatic drain: condensate collected in the polycarbonate bowl is ejected on its own, which suits installations that are not checked daily. The catalogue alternatives are a manual drain, where an operator opens the bowl drain, and the differential-pressure drain, which is the default when no drain code is given. The regulation range for automatic and differential-pressure drains is 0.15-0.9 MPa (20-130 psi).
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.