The AirTAC GFR30015AC3WT AirTAC Filter Regulator NPT1/2 5 um Auto Drain 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 GFR30015AC3WT is a 300-size filter regulator that cleans compressed air and holds downstream pressure in one body. This configuration is threaded NPT1/2 (1/2 in), carries a 5 um filter element (code W) for finer particulate and water removal than the standard 40 um grade, and has an automatic drain that expels collected condensate without manual attention. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and a round pressure gauge scaled in bar is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl suits the 300 size, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, embedded square or external round gauges with 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 datasheet and sizing figures for your application on request.
| Model | GFR30015AC3WT AirTAC Filter Regulator NPT1/2 5 um Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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, bar 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Feeds clean, regulated air to the tool-clamp and pallet-changer circuits of a CNC machining centre, with 5 um filtration protecting the directional valves and an automatic drain keeping condensate out of the bowl on a machine that runs unattended.
Sits at the drop of a bottling or canning conveyor to condition the air driving the stopper, pusher and lift cylinders, holding a steady set pressure so bottle handling stays consistent through a full shift while the automatic drain handles moisture carry-over.
Installed at the point of use on an automotive assembly cell to supply impact drivers, clamps and air cylinders, with the 5 um element guarding fine-tolerance tools and the bar-scaled gauge giving operators a local pressure reference at the station.
Start with the port step: this unit is the 300 size with a 1/2 in thread, one step above the 1/4 in and 3/8 in sizes and below the 3/4 in and 1 in sizes - match the size to the flow your line needs and confirm it against the published curves before ordering. Drain type is a real choice: automatic (this unit) empties the bowl on its own, manual needs operator attention, and the default differential-pressure drain bleeds only when the pressure drop warrants it. Filtration is 5 um here (code W) versus the 40 um standard - choose 5 um where downstream valves and cylinders need finer protection. Gauge scale is selectable (MPa, psi or bar; this unit is bar) and the thread can be ordered as PT, G or NPT. A mounting bracket is included. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and the air demand of your equipment, and we will confirm the sizing from the datasheet curves on request before you order.
Both are decodable choices in the GFR series. The W in the code selects the 5 um element instead of the 40 um standard, chosen where downstream valves and cylinders need finer protection. The A selects the automatic drain, which discharges condensate by itself; differential-pressure (the default) and manual drains are also available as separate configurations. The round gauge is scaled in bar on this unit, with MPa and psi scales orderable.
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.