The AirTAC GFR40010MLJF2WGK AirTAC Filter Regulator G3/8, 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 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 GFR40010MLJF2WGK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a G3/8 (3/8 in) G-thread port, a fine 5 um filter element for cleaner downstream air, a manual drain for controlled bowl evacuation, and the low-pressure regulator type for circuits set below the standard range. It carries an embedded square gauge scaled in psi, a built-in reverse/check valve to hold downstream pressure, and is supplied without a mounting bracket. The polycarbonate bowl suits the 400 size and the unit handles a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, and choices of drain type, 40 um or 5 um filtration, gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010MLJF2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (G (BSPP) 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. |
| G | G (BSPP) 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 carton-sealing or wrapping machine section that runs its actuators at reduced line pressure, this low-pressure-type GFR400 filters the supply to 5 um, regulates the setpoint, and its check valve holds the downstream circuit while the square psi gauge gives the operator a direct reading.
A test rig or analytical bench fed from a shop-air header uses the 5 um element to strip fine particulate and water from the supply before it reaches gauges and sample-handling hardware, with manual drain letting the technician clear the bowl at the start of each session.
Air cylinders that throw gates and diverters along a conveyor line are fed through this 3/8 in filter regulator: the element keeps grit out of the cylinder seals, the regulator sets the stroke pressure, and the reverse/check valve prevents backflow through the unit when the upstream supply is vented.
Size and port set the air path: this unit steps up to the 400 series with a 3/8 in G-thread port, so match it to lines and actuators served at that connection. Drain choice matters: manual drain (this code) means an operator opens the bowl drain, while automatic and differential-pressure drains discharge condensate without attention - choose manual where supervised, periodic draining fits the maintenance routine. Filtration is the fine 5 um element (code W) instead of the 40 um standard, for air feeding sensitive components. The embedded square gauge here is scaled in psi; MPa and bar scales are available, and an external round gauge is optional. Thread is G (BSPP); PT is the catalogue standard and NPT is an order option. No mounting bracket is included with the J code. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing from the datasheet before you order.
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 GFR400 as curves, not as a single rated number, so we do not quote a flow figure. Send us your application - connection size, downstream consumption and required pressure - and we will confirm the sizing against the datasheet curves on request.
The L code marks this as the low-pressure regulator type, intended for circuits set below the standard range; the exact adjustment range for this variant is not published in the material we hold, so confirm it with us. The K code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply drops. The unit also carries a 5 um element (W), a manual drain (M), a square psi gauge (F2), G thread and no bracket (J).
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.