The AirTAC GFR40010AJF1WT AirTAC Filter Regulator NPT3/8, 5 um 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 AirTAC GFR400 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration has a 3/8 in NPT port, a 5 um filter element, an automatic drain that expels collected condensate without manual attention, and an embedded square gauge reading in MPa. The polycarbonate bowl suits the -5 to 70 C (non-freezing) operating range, and maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), 40 um or 5 um elements, and gauge or no-gauge variants. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR40010AJF1WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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 — square, MPa 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding clean, regulated air to the clamp and tool-change cylinders of a CNC machining center, with the 5 um element guarding against particulate carryover into tight-tolerance actuators.
Supplying the carton-sealing and case-erector cylinders on a packaging conveyor line, where the automatic drain keeps condensate out of the valves through repeated start-stop cycles.
Point-of-use filtration and regulation at assembly-station air drops, letting each station set its own downstream pressure while the square MPa gauge gives operators a clear reference.
Size and port set the flow capacity: this unit is size 400 with a 3/8 in NPT port, one step up from the 1/4 in size-300 units. Drain type is a real choice: automatic (this unit) empties the bowl on its own, manual requires periodic draining, and the differential-pressure default vents as pressure differential builds. Filter grade is 5 um here; 40 um is the standard element if finer filtration is not required.
The square gauge reads in MPa; psi and bar scales, and an external round gauge, are order options. Thread is NPT on this unit - PT is the AirTAC standard and G (BSPP) is also available to order. No mounting bracket is fitted on this unit; bracketed versions exist. Because flow is published as curves rather than a single rating, 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, not a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the correct sizing from the datasheet on request.
On GFR filter regulators the drain type affects the regulation span: with automatic or differential-pressure draining the range is 0.15-0.9 MPa (20-130 psi), while manual-drain versions reach down to 0.05-0.9 MPa (7-130 psi). This unit has the automatic drain.
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.