The AirTAC GFR40010AJC2WK AirTAC Filter Regulator PT3/8 5um 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 GFR40010AJC2WK is an AirTAC GFR400 filter regulator, a single-body unit that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the size 400 body with PT3/8 ports, a 5 um filter element (the finer of the two catalogue grades), an automatic drain that expels collected condensate without manual attention, a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi), and a reverse/check valve fitted. The external round gauge in this code reads in psi, complementing the embedded square gauge arrangement of the series. The polycarbonate bowl suits the non-freezing -5 to 70 C operating range, and maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR filter-regulator family covers sizes 200, 300, 400 and 600, with port options from PT1/8 up to PT1, G (BSPP) and NPT thread variants, manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge and scale choices, and a low-pressure regulator type. Because flow is published as curves rather than a single rated figure, we confirm flow and datasheet figures on request before you order.
| Model | GFR40010AJC2WK AirTAC Filter Regulator PT3/8 5um Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT 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 | 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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding clamping cylinders on a pneumatic press: the 5 um element keeps wear particles and water out of the cylinder seals while the regulator holds a repeatable clamping pressure, and the check valve holds the set pressure if the plant air supply drops.
Supplying stopper and diverter cylinders on a packaging conveyor: the automatic drain clears condensate from the bowl without operator rounds, and the psi gauge lets line staff verify the set pressure at a glance during changeover.
On a bench that air-drives test fixtures and sample holders: the 5 um grade protects sensitive instrumentation downstream, the regulator gives fine adjustment of test pressure within the 0.15-0.9 MPa range, and the psi-scaled gauge supports documented setpoints.
Start with the size and port: 400 is the third of four frame sizes, and the 10 position gives a PT3/8 connection - step up to size 600 if your line needs more flow capacity, or down to 300 for compact circuits. This unit carries the 5 um element (code W); choose the standard 40 um where only coarse protection is needed. The automatic drain (code A) suits unattended installations, while manual and differential-pressure drains are the alternatives in the family. The C2 position gives the external round gauge with a psi scale; MPa and bar scales and the embedded square gauge are the other options, and N removes the gauge entirely. The fitted reverse/check valve (K) holds downstream pressure if supply is lost, and J means no mounting bracket is supplied - order the bracket variant if you panel-mount. Thread is PT as standard; G (BSPP) and NPT are order options. Flow for this series is published as curves, not a single rating, so 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. The reflux valve permits reverse flow 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. Send us your line pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet on request before you order.
The A in the code specifies the automatic drain, which expels collected condensate from the bowl without manual attention - useful for units mounted in awkward or unattended positions; manual and differential-pressure drains are the other catalogue choices. The W code selects the 5 um filter element instead of the standard 40 um, for finer protection of downstream equipment. Both are decodable options on the same GFR400 body.
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.