The AirTAC GFR40015ALF2W 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 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 GFR40015ALF2W 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 built for 1/2 inch PT ports, carries the W fine-filtration element (5 um instead of the standard 40 um), and drains condensate automatically, so the bowl empties itself without manual attention. It is the low-pressure regulator type and comes with an embedded square gauge scaled in psi. The polycarbonate bowl suits the 400 frame, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 inch to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015ALF2W AirTAC Filter Regulator PT1/2 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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, 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". |
| 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. |
| (blank) | Mounting bracket included. |
| (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) |
Feeds and regulates the clamp cylinders on a machining fixture, with 5 um filtration protecting the clamping valves from particulate and the automatic drain keeping condensate out of the circuit between cycles.
Supplies filtered, regulated air to air knives that blow moisture off bottles before labelling, where the low-pressure regulator type and fine 5 um element suit sensitive nozzle and blower hardware.
Prepares air for spray guns and coating valves that run at reduced pressure, with the psi-scaled gauge giving operators a direct reading and the automatic drain protecting the finish from water carryover.
Choose the size 400 / PT1/2 step when your line's flow demand sits at the upper-middle of the G-series range; larger sizes carry more flow at the same pressure, so step up if your demand is heavy. This unit already carries the three most common upgrades: the W 5 um element for finer filtration than the 40 um standard, the automatic drain so condensate is expelled without operator attention, and the psi-scaled square gauge if your plant reads in imperial units. Thread is PT as standard; G (BSPP) and NPT are order options if your piping needs them, and the included bracket simplifies panel or frame mounting. Because flow is published as curves and this is the low-pressure regulator type, ask us to confirm the exact regulation range and sizing 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 series as curves, not as a single rated figure, so we do not quote a l/min or SCFM number here. Tell us your operating pressure and demand and we will confirm the flow from the datasheet, along with the regulation range for this low-pressure type, before you order.
A is the automatic drain, which expels collected condensate from the bowl without manual attention. F2 is the embedded square gauge scaled in psi. W is the 5 um fine-filtration element, one grade finer than the 40 um standard. The unit is the low-pressure regulator type with PT1/2 ports and a mounting bracket included.
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.