The AirTAC GFR40015ALC3TK AirTAC Filter Regulator NPT1/2 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 GFR40015ALC3TK is a size 400 filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body, so one component conditions the air and sets the working pressure. This configuration is built around 1/2 inch NPT ports, an automatic drain that bleeds collected condensate from the polycarbonate bowl without manual attention, and the standard 40 um filter element. The regulator is the low-pressure type, a round external gauge with a bar scale is fitted, and a reverse/check valve is built in to hold the downstream setting if upstream supply dips. A mounting bracket is included.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, an optional 5 um element, and G or NPT thread variants. Rated flow is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR40015ALC3TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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, bar 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. |
| 3 | Gauge scale: bar. 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) |
Feeds a clamping or hold-down circuit on an assembly press where workpieces need clean, moisture-reduced air held at a steady reduced pressure, with the check valve helping hold the setting through supply dips.
Conditions the supply to packaging and carton-sealing machinery running on 1/2 inch air lines, filtering out water and pipe scale ahead of actuators while the low-pressure regulator sets a gentle working pressure.
Serves as a dedicated conditioning point on a plant air header feeding low-pressure pneumatic tooling or fixtures, with the automatic drain keeping condensate out of the downstream circuit and the bar gauge giving a local pressure readout.
Size 400 with 1/2 inch ports sits in the upper half of the GFR range, so step up or down between 200/300/400/600 according to the air demand of the circuit; we will confirm the published flow curve against your consumption before you order. Drain choice is real: this unit has an automatic drain, but manual and differential-pressure versions exist if you prefer operator-controlled or pressure-differential draining. The 40 um element fitted here is the standard grade; specify code W for the 5 um option where finer particulate removal matters. The fitted round gauge reads in bar, and square embedded gauges or MPa/psi/bar scales are the other catalogue choices. Thread is NPT on this variant; PT is the standard thread and G (BSPP) is also an order option. A bracket is included on this version. Note this is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us against your set pressure before ordering.
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 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your line pressure and air consumption and we will confirm the datasheet flow figures against your application on request.
The L in the code marks the low-pressure regulator type, intended for circuits set well below full line pressure; its exact adjustment range is not published, so confirm it with us before ordering. The K code means a reverse/check valve is fitted, which helps hold the downstream setting if the upstream supply drops.
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.