The AirTAC GFR40015ALF2T AirTAC Filter Regulator NPT1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 40 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 GFR40015ALF2T is a 400-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single compact body. This configuration carries a 1/2 in NPT port, a 40 um standard filter element, an automatic drain that discharges collected condensate from the PC bowl without daily manual attention, and a low-pressure regulator type for applications where set pressures sit at the lower end of the range. The embedded square gauge is scaled in psi so operators can read and adjust the outlet setting at a glance, and a mounting bracket is included for secure panel or frame installation.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of PT, G (BSPP) or NPT threads, manual, automatic or differential-pressure drains, a 5 um (code W) element where finer filtration is needed, and gauge scale options in MPa, psi or bar. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR40015ALF2T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding clean, pressure-set air to carton-sealing and case-erector cylinders on a packaging line, where the automatic drain keeps condensate out of the valves without an operator visiting the unit each shift.
Conditioning the air feeding pneumatic screwdrivers, clamps and press tools at an assembly workstation, with the psi-scaled square gauge letting the setter verify the outlet pressure the tools were calibrated for.
Supplying filtered, regulated air to sorting gates, diverters and stopper cylinders along a conveyor system, using the low-pressure regulator type where the actuators run at modest set pressures.
Start with the port step: the 400 size in this model takes a 1/2 in connection, and the G-series steps through 200, 300, 400 and 600 as port size and flow capacity rise - match the size to the air demand of the circuit rather than oversizing on guesswork. Choose the drain to suit access: automatic (as fitted here) where the unit is installed in a position that is inconvenient to service, manual where an operator can drain by hand, or the differential-pressure default. Filter grade is 40 um as standard; specify the W code for the 5 um element where downstream equipment needs finer filtration. Gauge scale is selectable (MPa, psi or bar) - this unit carries the square gauge in psi, with an external round gauge available as an option. Thread is NPT here; PT is the catalogue standard with G (BSPP) and NPT as orderable options, and a bracket is included.
Because AirTAC publishes flow only as curves and not as a single rated figure, we do not quote a flow number for this unit. Send us your application's air demand and line pressure and we will confirm the sizing against the datasheet before you order.
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 rather than a single rated figure, so we do not state a rated flow number for this unit. Send us your application's air demand and working pressure and we will confirm the sizing from the datasheet on request before you order.
The A code in GFR40015ALF2T specifies an automatic drain, which discharges collected condensate from the bowl on its own - useful where the unit is mounted in a hard-to-reach position. The GFR family also offers a manual drain (code M) that is emptied by hand, and a differential-pressure drain (blank code, the default) that responds to the pressure drop across the filter element.
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.