The AirTAC GFR40015ALC2GK AirTAC Filter Regulator G1/2 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 GFR40015ALC2GK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is built with a G1/2 (BSPP) port, an automatic drain that expels collected condensate without manual attention, and the standard 40 um filter element. It is the low-pressure (L) type, intended for circuits that hold a lower regulated set pressure than a standard unit, and it carries a reverse/check valve (code K) plus an external round gauge scaled in psi. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -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, a choice of differential-pressure, automatic or manual drains, an optional 5 um element (code W), embedded square or external round gauges in MPa, psi or bar scales, and G or NPT thread options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015ALC2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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, psi 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. |
| 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. |
| G | G (BSPP) 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 filtered, regulated air to clamp and fixture cylinders on a CNC machining cell, with the low-pressure type holding a reduced set pressure for delicate clamping and the automatic drain keeping condensate out of the circuit.
Supplies clean, regulated air to the air cylinders and air-actuated diverters that drive a carton-forming and conveyor line, with the psi-scaled round gauge letting operators verify set pressure at a glance.
Conditions and regulates the air feeding spray-gun atomizing circuits in a finishing booth, where the 40 um element strips water and particulate and the check valve protects the set pressure against upstream backflow.
Start with the port step: size 400 with a G1/2 port sits in the upper half of the GFR range - step up to size 600 if your line needs more flow capacity, or down to 300/200 for compact circuits. Choose the drain to match maintenance reality: the automatic drain fitted here suits unmanned or hard-to-reach installations, while manual and differential-pressure drains are available on other variants. The standard element is 40 um; specify the W suffix if your circuit needs the 5 um grade. Gauge choice is yours: the embedded square gauge is standard, and this unit carries an external round gauge in psi (MPa and bar scales are also offered). Thread is G (BSPP) here; PT is the standard and NPT is an order option. A mounting bracket is included.
Because flow is published as curves and not a single rating, and the low-pressure type's regulation range is not stated as a single figure, ask us to confirm sizing and the regulation range against your application 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, not as a single rated figure, so we do not quote a rated flow number. Send us your application details and we will confirm the flow and datasheet figures for this unit on request before you order.
The L code marks the low-pressure regulator variant, intended for circuits that hold a lower set pressure than the standard type; its exact regulation range is not published as a single figure, so we confirm it on request. The A code means the bowl drains automatically, expelling collected condensate without manual intervention - useful where the unit is mounted out of easy reach.
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.