The AirTAC GFR40015MLJF2W AirTAC Filter Regulator PT1/2, 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 PT1/2" 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 AirTAC GFR400-15MLJF2W is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type with a 5 um filter element (code W), a manual drain on the bowl, an embedded square gauge reading in psi, and a PT1/2 (PT thread) port. Because it is the low-pressure type, its setting range differs from the standard unit - we confirm the exact range from the datasheet on request. The manual drain means the bowl is emptied by opening its drain valve by hand as part of routine maintenance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8" to 1", a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, standard or low-pressure regulation, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request before you order.
| Model | GFR40015MLJF2W AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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 | 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| (blank) | PT 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On paint-spray and coating stations that run at reduced line pressure, the GFR400-15MLJF2W filters water and particles out of the supply and holds a low regulated setting, protecting finish quality at the gun. The 5 um element and psi-scale gauge suit these sensitive, lower-pressure circuits.
On cartoning, wrapping and filling machines fed from a 1/2" main, this filter regulator conditions the air before it reaches cylinders and actuators, with the manual drain emptied during scheduled changeover maintenance and the square gauge giving a direct psi reading at the machine.
On test benches and lab rigs where instruments need clean, finely set air at modest pressures, the low-pressure type regulator with 5 um filtration provides conditioned supply, and the PT1/2 port ties into the bench main. We confirm the setting range from the datasheet for the bench's working pressure.
Start with size and port: the 400 size with a PT1/2 port sits in the middle-upper range of the GFR line, and the right step depends on the air demand of your circuit - we confirm sizing against the published flow curves before you order. Choose the drain to suit maintenance routines: this unit is manual drain (open the valve by hand), while automatic and differential-pressure drains are available in the same family. The 5 um (W) element suits applications needing finer particulate removal than the 40 um standard grade. The square gauge is fitted with a psi scale; MPa or bar scales and an external round gauge are other catalogue choices. Thread is PT as standard, with G and NPT as order options. Note the J code: this unit is supplied without a mounting bracket. Finally, this is the low-pressure (L) type - if your circuit runs at ordinary shop-air pressures, check with us that the low-pressure setting range matches, as its exact range is confirmed from the datasheet on request.
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 GFR400 series as curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Send us your application's air demand and working pressure and we will confirm the flow and sizing from the datasheet on request before you order.
The M in the code means the bowl is drained by hand: an operator opens the drain valve as part of routine maintenance. This suits stations that are visited regularly. If you prefer the bowl to clear itself, the GFR400 family is also available with automatic (A) or differential-pressure (blank) drains - just ask for the equivalent code.
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.