The AirTAC GFR40010AJC2GK 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body. This configuration, GFR40010AJC2GK, is the size 400 unit with a G3/8 (BSPP) port, a 40 um filter element, an automatic drain that ejects collected condensate without manual attention, and a round pressure gauge reading in psi. A reverse (check) valve is fitted, and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), the polycarbonate bowl suits the 400 size, and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options, drain types, filter grades, gauge styles and thread variants to match. Published flow data appears as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010AJC2GK 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 | Fitted (reverse flow permitted) |
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. |
| K | Reverse-flow (reflux) valve fitted. |
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 clamps and fixtures on a CNC machining centre, where the filter section strips water and swarf-laden air from the shop supply and the regulator holds a steady clamp pressure, with the psi gauge read directly at the machine.
Supplying stoppers, pushers and diverters on a food or beverage packaging conveyor, where the automatic drain copes with condensate from long compressed-air runs and the check valve holds the set circuit while upstream pressure fluctuates.
Conditioning the air at a service-bay drop feeding impact wrenches, blow guns and tyre inflators, where the 40 um element protects the tools and the regulator lets each bay set its own working pressure.
Step through the decodable choices: pick the size (200/300/400/600) and its port against the pipe diameter and the flow your line needs; choose the drain - automatic (this model), manual, or the differential-pressure default - based on how often someone can attend the unit; choose the 40 um standard element or the 5 um (W) grade where finer filtration is needed; select the gauge style and scale (MPa, psi or bar); and confirm the thread, since PT is the standard and G (BSPP) or NPT are order options. Bracket provision is also a code choice. Flow is published as curves, not a single rating, so send us your application details 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your application details and we will confirm the datasheet flow curve and sizing for this exact model on request.
The A in the code specifies an automatic drain, which ejects collected condensate by itself - useful where the unit is mounted in a hard-to-reach spot or the air supply is wet. The alternatives in the series are a manual drain, emptied by hand, and the differential-pressure drain fitted as the default; all three share the same filtration and regulation function.
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.