The AirTAC GFR300-15AC2WG AirTAC Filter Regulator G1/2, 5 um 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 GFR300-15AC2WG is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built with G1/2 ports, a 5 um filter element for finer filtration than the standard 40 um grade, and an automatic drain that expels collected condensate without anyone opening the bowl. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), a round external gauge reading in psi is fitted, and the polycarbonate bowl is protected by an included mounting bracket. 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 from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with ports from 1/8" to 1". Across the range you can order manual, automatic or differential-pressure drains, 40 um or 5 um elements, square embedded or round external gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300-15AC2WG AirTAC Filter Regulator G1/2, 5 um |
|---|---|
| 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 | 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 | 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. 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. |
| 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. |
| (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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Fitted on the air drop feeding a CNC machining centre, the 5 um element keeps fine contamination out of solenoid valves and spindle-clamp cylinders while the regulator holds a steady set pressure for clamping and tool-change actuation.
On a lab analyser or test-rig enclosure supplied with compressed air, the unit filters incoming water and particles down to 5 um and regulates the purge pressure, with the psi gauge giving operators a visible setpoint check.
Mounted at the head of a packaging line, it conditions the air feeding diverter gates, bag sealers and case-erector cylinders; the automatic drain handles condensate through multi-shift running without daily bowl draining.
Start with the port step: the 300 size carries G1/2 here, and the next step up or down (400 or 200) changes both the port and the flow capacity, so match the size to the air demand of the circuit rather than the pipe alone. This unit already carries the finer 5 um element (code W); the standard grade is 40 um, so choose 5 um where downstream valves, cylinders or instruments need cleaner air. Drain choice matters: the automatic drain fitted here empties the bowl unattended, while manual and differential-pressure drains are the other catalogue options. Gauge scale is selectable as MPa, psi or bar - this unit reads psi. Thread is G (BSPP) as coded; PT is the standard thread and G or NPT are order options. A bracket is included, and a reverse/check valve can be ordered where needed.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so send us your application details and we will confirm the right size against the datasheet 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 there is no one l/min or SCFM number we can honestly quote. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl on its own - useful on lines that run unattended. The catalogue also offers a manual drain and a differential-pressure drain (the default), so you can order GFR300 in 1/2" with whichever drain suits your maintenance routine.
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.