The AirTAC GFR30015ALC2G 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 GFR30015ALC2G is a GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size 300 unit is built with a G1/2 port, an automatic drain that bleeds collected condensate from the PC bowl without manual attention, a 40 um standard filter element, and a low-pressure regulator type. A round gauge with a psi scale is fitted so the set pressure can be read at a glance, and the mounting bracket is included for panel or wall fixing.
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 drain types, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30015ALC2G AirTAC Filter Regulator G1/2, Low-Pressure |
|---|---|
| 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 | 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 | Not fitted |
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. |
| (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. |
| (blank) | No reverse-flow valve (the default). |
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) |
Feeding the cylinder and valve manifold supply on a carton or bag packing line: the 40 um element and bowl strip water and pipe scale before the regulator, and the psi gauge lets the line set the actuator pressure at the machine.
A single-point supply for conveyor take-up clamps and product hold-downs, where the low-pressure regulator type suits circuits that run at reduced set pressures and the automatic drain keeps condensate out of the clamp cylinders.
Mounting on the air-preparation plate of a control panel or retrofit machine: the included bracket fixes the unit beside the shut-off and soft-start gear, and the G1/2 port matches standard 1/2 inch panel pipework.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/2 inch port, one step up from the 300-series 3/8 inch option and below the 400 and 600 frames. The automatic drain on this configuration suits unattended installations where regular bowl draining cannot be guaranteed; manual and differential-pressure drains are available elsewhere in the range. Filtration is the 40 um standard element - pick the W-coded 5 um grade if downstream valves or instruments need finer protection. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are the other gauge choices. PT is the standard thread, with G (this unit) and NPT available as order options, and a bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the datasheet figures and the right size before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as performance curves rather than a single rated figure, so we do not quote a flow number on the page. Tell us your inlet pressure, set pressure and air demand and we will confirm the datasheet curve and check that the size 300, 1/2 inch unit is correctly sized for your application before you order.
The A in the code GFR30015ALC2G specifies an automatic drain: condensate collected in the PC bowl is discharged without anyone having to open the drain by hand, which suits unattended or hard-to-reach installations. The C2 code specifies a round external gauge with a psi scale fitted to the regulator, so the downstream set pressure can be read directly; embedded square gauges and MPa or bar scales are the alternative gauge options in this family.
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.