The AirTAC GFR40010ALJF1WT AirTAC Filter Regulator NPT 3/8 in 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 GFR40010ALJF1WT is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built on the size 400 frame with 3/8 in NPT ports, carries a 5 um filter element (code W) instead of the standard 40 um, and uses an automatic drain so collected condensate is expelled without manual attention. It is the low-pressure type (code L) and comes with the embedded square gauge scaled in MPa; no mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is offered with manual, automatic or differential-pressure drains, 40 um or 5 um elements, square or external round gauges (MPa, psi or bar scales), PT, G or NPT threads, and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR40010ALJF1WT AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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 | 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, 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. 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. |
| 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) |
Air drops feeding clamp and hold-down cylinders get filtered, regulated air from one compact body; the automatic drain keeps condensate off the fixture circuit between shifts.
The 5 um element polishes the air feeding spray guns and air-assisted applicators, while the low-pressure type regulator holds a gentle, steady setting at the gun manifold.
Sorting and wrapping machines with air-driven pushers and gates run off a filtered, regulated supply; the MPa square gauge gives operators a quick setpoint check at the machine.
Start with the port step: this unit is size 400 with 3/8 in NPT ports; smaller and larger GFR sizes cover 1/8 in to 1 in, so match the frame to the air demand of the circuit. The drain choice matters in practice: automatic drain (this unit) suits unattended duty, manual drain suits supervised points, and differential-pressure drain is the catalogue default. This unit carries the 5 um element (code W) where finer particulate capture is wanted; the standard element is 40 um. The embedded square gauge here is scaled in MPa, and psi or bar scales plus an external round gauge are available. Thread is NPT on this code; PT is the standard thread and G (BSPP) is also a catalogue option. No bracket is included (code J); a bracket can be specified on other codes.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, and the low-pressure type's regulation range is not stated in the material we hold. Ask us to confirm flow and the pressure range 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 family as curves rather than a single rated number, so we do not quote a figure here. Tell us your application and air demand and we will confirm the sizing from the datasheet on request.
L marks the low-pressure type of regulator, which is set up for circuits running below standard regulator settings; its exact range is not published, so ask us to confirm it. The A in the code is the automatic drain: condensate collected in the PC bowl is expelled without anyone opening a valve, unlike the manual-drain and differential-pressure-drain options in the same family.
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.