The AirTAC GFR40010MLJF2WTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR40010MLJF2WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built for a 3/8 in NPT port, carries a fine 5 um filter element (code W), uses a manual drain on the polycarbonate bowl, and is the low-pressure regulator type. A square pressure gauge reading in psi is fitted, and a reverse/check valve is included so downstream pressure is held if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and thread options PT (standard), G and NPT. Filter grade, drain type, gauge and scale are all selectable across the range. Published flow data appears as curves rather than a single rated figure, so contact us and we will confirm the datasheet figures for your application on request.
| Model | GFR40010MLJF2WTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, 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. 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 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. |
| 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a machining cell where workpieces are held by air clamps that must not be squeezed too hard, a low-pressure filter regulator conditions the supply, removes water and chips-carrying particulate at 5 um, and holds a gentle set pressure. The reverse/check valve keeps the clamps from releasing if the main supply dips.
Heat-seal and forming heads on a packaging conveyor often run best at reduced air pressure. This unit filters the shop air to 5 um to protect the seal cylinders, regulates it down to the gentle setting the film needs, and its psi gauge lets operators check the setting at a glance.
Bench-top analysers, sample conveyors and purge-air points in a lab need clean, low-pressure air. The 5 um element strips water and fine particulate before the instrument, the low-pressure regulator type suits sensitive downstream gear, and the manual drain suits a supervised environment where checks are routine.
Size 400 with a 3/8 in NPT port suits lines where moderate-to-high air delivery is needed; step up or down a size if your flow demand changes, since larger sizes carry larger ports and more flow. The 5 um element (code W) is the finer choice over the standard 40 um grade - pick it where downstream valves and instruments need cleaner air. The manual drain means an operator opens the bowl drain periodically; choose automatic or differential-pressure drain codes if you want unattended condensate removal. The fitted square gauge reads in psi, with MPa and bar scales available as alternatives, and an external round gauge is optional. PT is the standard thread; G and NPT are catalogue options to order. This unit ships without a mounting bracket (code J) and includes a reverse/check valve (code K). Flow 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 this series as performance curves rather than a single rated figure, so there is no one rated flow number we can honestly quote. Tell us your application and required delivery, and we will confirm the relevant datasheet figures on request before you order.
The M in the code specifies a manual drain: an operator opens the bowl drain to expel collected condensate, which suits supervised installations with routine checks. If the unit will run unattended, the automatic (A) or differential-pressure (blank) drain codes remove condensate without operator action - those are separate order codes in the same series.
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.