The AirTAC GFR30015ALC2WGK AirTAC Filter Regulator G1/2 Low-Pressure 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 GFR30015ALC2WGK is a GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is the size-300 unit with a G1/2 (BSPP) port, the 5 um filter element (code W) for finer filtration than the 40 um standard, an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type for applications that hold a lower working pressure. It carries a round pressure gauge reading in psi, a reverse/check valve fitted, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating 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 ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application on request.
| Model | GFR30015ALC2WGK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) 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 — 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 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. |
| W | Filtering grade 5 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 | GFR300 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding a low-pressure clamping circuit on a machining cell: the 5 um element protects directional valves from particulate and water carryover while the low-pressure regulator holds the gentler holding pressure the clamps need.
A single-body supply point on a cartoning or wrapping machine: filtered, regulated air to the actuators, automatic drain keeping condensate off the line during continuous shifts, and a psi gauge for operator checks.
Supplying test rigs and bench instruments that demand cleaner, lower-pressure air: the 5 um grade and low-pressure regulation suit sensitive equipment, with the check valve holding the setting against upstream fluctuation.
Size and port set the capacity: this is the size-300 unit with a 1/2 in port, one step up from size 200 and below sizes 400 and 600, so match the port step to the air consumption of the machine it feeds. Drain is a real choice: automatic (this unit) suits unattended or hard-to-reach installations, manual suits supervised points, and differential-pressure drain is the catalogue default. Filtration is 5 um here (code W) against the 40 um standard - choose 5 um where downstream valves and cylinders need finer protection. The gauge on this unit is the external round type reading psi; embedded square gauges and MPa or bar scales are the alternatives. Thread is G (BSPP); PT is the catalogue standard and NPT is available to order. A bracket is included, and the low-pressure regulator type is selected where the working pressure sits below the standard type's range.
Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application 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 this series as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Tell us your application and we will confirm the relevant flow data from the datasheet on request before you order.
This unit carries code A, the automatic drain, which expels collected condensate on its own - the right choice for unattended or hard-to-reach installations. The catalogue also offers manual drain (code M) and the differential-pressure default, so you can match the drain to how the point is supervised.
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.