The AirTAC GFR40015ALC1TK 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 GFR40015ALC1TK is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air with the standard 40 um filter element and holds a set downstream pressure, configured here as the low-pressure type for circuits that run below standard regulator settings. This unit is built with a 1/2 in NPT port, an automatic drain that ejects collected condensate without manual attention, a reverse/check valve fitted, and an external round pressure gauge with an MPa scale included. The polycarbonate bowl suits the size 400 frame, and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options that include manual or automatic drains, a 5 um filter element (code W), square or round gauges with MPa, psi or bar scales, and G (BSPP) or NPT threads in place of the PT standard. We confirm flow and full datasheet figures on request, as flow for this series is published as curves rather than a single rated number.
| Model | GFR40015ALC1TK 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 — round, MPa 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. |
|---|---|
| 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a CNC fixture line where clamps are held at a deliberately reduced pressure to avoid distorting the workpiece, this low-pressure type filter regulator sets and holds that reduced line pressure, while the 40 um element keeps scale and pipe debris out of the clamp cylinders and the check valve holds the circuit if upstream supply dips.
A 1/2 in NPT feed serving a bank of actuators on a bottling or filling line gets filtered and regulated air from this single-body unit; the automatic drain clears condensate continuously through long production shifts, and the round MPa gauge gives operators a visible setpoint check at the manifold.
Atomizing and conveying stations on a finishing line need clean, moisture-free air at a stable reduced pressure; this unit filters water and particulate at 40 um, regulates the low-pressure supply the spray equipment calls for, and the automatic drain prevents accumulated condensate from reaching the guns.
Size 400 with a 1/2 in port sits in the upper-middle of the GFR range; step up to size 600 or down to size 300 depending on the flow your line needs, and match the thread to your piping: PT is the catalogue standard, with G (BSPP) and NPT (this unit, code T) as order options. The automatic drain (code A) suits unattended duty; choose manual where you want condensate release under operator control, or differential-pressure as the default. The standard element is 40 um; specify W for the 5 um grade where downstream equipment needs finer filtration. This is the low-pressure type (code L), intended for circuits regulated below the standard type's range; the exact adjustment span for the low-pressure version is not published, so ask us to confirm it against your setpoint. The round gauge here reads in MPa; psi (scale 2) or bar (scale 3) scales are available, and the embedded square gauge is the standard alternative. A mounting bracket is included, and the K code means a reverse/check valve is already fitted.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application's flow and pressure requirements and we will confirm the correct size against 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 GFR series as curves rather than a single rated figure, so we do not state a flow number for this unit. Send us your required flow and working pressure and we will confirm against the datasheet whether size 400 with its 1/2 in port suits your application before you order.
K means a reverse/check valve is fitted, so air will not back-flow through the unit if upstream pressure is lost. The A code is the automatic drain: collected condensate is discharged from the polycarbonate bowl without operator intervention, unlike the manual-drain option which you open yourself, or the differential-pressure drain which is the catalogue default.
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.