The AirTAC GFR40010ALJF3TK AirTAC Filter Regulator NPT3/8 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 GFR40010ALJF3TK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 configuration has a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, a low-pressure type regulator, an embedded square gauge scaled in bar, and a reverse (check) valve fitted; it is supplied without a mounting bracket. The polycarbonate (PC) bowl suits the 200/300/400 sizes, with aluminium alloy reserved for size 600.
This is a genuine AirTAC part. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The GFR family spans sizes 200 to 600 with ports from 1/8 in to 1 in, drain choices (differential-pressure, automatic or manual), an optional 5 um element (code W), gauge scale options and G/NPT thread variants. Because this unit is the low-pressure type, its exact adjustment range is not published in our data; flow is likewise published only as curves, so we confirm both from the datasheet on request.
| Model | GFR40010ALJF3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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, bar 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Point-of-use filter regulator feeding clamping cylinders on a press line that runs at reduced pressure: the 40 um element keeps valve spools clean while the automatic drain clears condensate through long unattended shifts, and the check valve holds the clamp circuit if supply pressure drops.
Mounted ahead of the directional valves that drive diverter gates and gripper cylinders on a packaging conveyor, this unit gives the line one clean, regulated air take-off at a 3/8 in connection, with the square bar gauge giving operators a visible setpoint at the machine.
Installed as the supply conditioning stage for a manifold feeding air tools, blow-off nozzles and small actuators in an assembly cell, where the low-pressure type regulator sets a reduced working pressure for the cell and the automatic drain protects the downstream components from water carryover.
Start with the port: this code gives a 3/8 in NPT connection on the size 400 body, one step up from the 1/4 in size 300 units, and the right choice depends on the pipe and flow demand of your circuit. Drain type is a real decision: the automatic drain here suits unattended or hard-to-reach installations, while manual and differential-pressure drains are the other catalogue options. Filtration is the standard 40 um element; specify the 5 um option (code W) if downstream valves or instruments need finer air. The embedded square gauge on this unit is scaled in bar, with MPa and psi scales and an external round gauge available as alternatives. Thread is NPT as ordered here, with G (BSPP) and PT variants in the family; a bracket is optional and this code omits it. Flow is published only 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 this series as curves rather than a single rated figure, so we do not quote a number on the page. Send us your application details - line pressure, downstream consumption and acceptable pressure drop - and we will confirm the flow and sizing from the datasheet on request before you order.
The L code means this unit carries the low-pressure type regulator instead of the standard version; the exact adjustment range for that configuration is not published in our data, and we confirm it on request. The K code means a reverse (check) valve is fitted, which helps hold downstream pressure if the upstream supply is interrupted. Other decodable choices on this unit are the automatic drain, the 40 um standard element and the square gauge scaled in bar.
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.