The AirTAC GFR30015AC2GK AirTAC Filter Regulator G1/2 Auto Drain 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 GFR300 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one compact body. This unit is built in size 300 with a G1/2 port, an automatic drain that clears condensate from the PC bowl without manual attention, a 40 um filter element, a round gauge reading in psi, and a reverse/check valve fitted (code K). Maximum inlet pressure is 1.0 MPa (145 psi); with the automatic drain, the standard regulation range is 0.15-0.9 MPa (20-130 psi). The operating temperature range is -5 to 70 C (non-freezing), and the bowl on size 300 is polycarbonate.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for manual or differential-pressure drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, G or NPT thread variants, and bracket choices. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet numbers for your application.
| Model | GFR30015AC2GK AirTAC Filter Regulator G1/2 Auto Drain |
|---|---|
| Series | GFR300 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 | Standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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)). |
| (blank) | Standard 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 | GFR300 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Placed at the drop feeding a CNC machining cell's pneumatic clamps and tool-change cylinders, it strips water and particulate from shop air and holds a steady setpoint so clamp force does not drift between cycles. The automatic drain keeps condensate out of the bowl during unattended runs.
Mounted ahead of the air line serving spray guns on a paint or coating line, it removes water and particulate that would cause finish defects and regulates pressure to the setting the gun manufacturer specifies. The round psi gauge lets operators read the line at a glance.
Fitted at the inlet of packaging or carton-sealing machinery, it conditions the air driving cylinders and vacuum generators and keeps actuation pressure constant as line speed changes. The K-option reverse/check valve is on board for circuits that require one.
Size and port set the air-handling capacity: GFR200 through GFR600 step up from 1/8 in to 1 in ports, so pick the size whose flow curve covers your demand - we can check the curve against your consumption before you order. Drain type is a real choice on this family: automatic (A, as on this unit), manual (M) or differential-pressure (blank), and it changes the regulation range - 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain, 0.05-0.9 MPa (7-130 psi) with manual drain. The standard element is 40 um; specify W for the 5 um grade when finer filtration is needed. For indication, the embedded square gauge is standard and an external round gauge is optional, in MPa, psi or bar scales - this unit carries the round psi gauge (C2). Thread: PT is the standard; G (this unit) and NPT are order options. A mounting bracket is included unless J is specified.
One honest note on sizing: AirTAC publishes GFR flow as curves, not as a single rating, so ask us to confirm the figures 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 the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air consumption and we will confirm the flow from the datasheet curve for this exact model before you order.
GFR300 is the filter-regulator series in size 300; 15 is the 1/2 in port; A is the automatic drain; C2 is the round gauge with a psi scale; G is the G (BSPP) thread; and K means a reverse/check valve is fitted. A mounting bracket is included as standard, and the 40 um element is the standard grade (5 um is the W option).
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.