The AirTAC GFR300-10 AirTAC Filter Regulator, PT3/8, 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 PT3/8" 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 GFR300-10 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has PT3/8 ports, a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that ejects collected condensate without manual attention, an embedded square gauge reading in psi, a built-in reverse/check valve, and a mounting bracket. The polycarbonate bowl is rated to a maximum inlet pressure of 1.0 MPa (145 psi), the standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR300 series. The GFR family is also available in 200, 400 and 600 sizes with other port sizes, thread options (PT standard; G and NPT to order), manual or differential-pressure drains, the 40 um standard element, alternative gauge scales and a low-pressure regulator type. Flow for this model is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300-10 AirTAC Filter Regulator, PT3/8, 5 um, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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 — square, 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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| F | Gauge shape: Square. 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. |
| (blank) | PT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Mounted at the drop to a machining centre, the GFR300-10 cleans water and chips-laden debris from the shop-air supply at 5 um and holds a steady regulated pressure to the tool changer and pneumatic clamps. The automatic drain keeps condensate out of the bowl during unattended shifts.
On a carton-sealing or wrapping line, this unit feeds the cylinders and air-driven grippers with filtered, regulated air at a set pressure. The check valve holds the downstream setting if supply pressure dips, and the psi square gauge lets operators verify the set point at a glance.
Installed at a workstation drop on a factory ring main, the GFR300-10 combines water/particulate removal and pressure regulation in one body, saving panel space over separate units. The 5 um element protects air tools and fittings, and the included bracket simplifies mounting beside the station.
Choose the GFR300-10 when your line runs at 3/8 in PT ports and you want filtration and regulation combined in one body. The 5 um element (code W) suits downstream equipment that needs finer particulate removal than the 40 um standard; the automatic drain suits unattended or hard-to-reach installations, while manual and differential-pressure drains are available on other variants. The square gauge reads in psi; MPa and bar scales and an external round gauge are options. PT is the standard thread - G (BSPP) and NPT are order options. A mounting bracket is included with this code.
Flow for the GFR series is published as curves, not a single rated number, so we cannot quote a rated flow here. Send us your required flow and pressure and we will confirm sizing against the datasheet before you order.
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 GFR-series flow as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number here. Tell us your required flow and working pressure and we will confirm the sizing against the datasheet on request before you order.
In the code GFR30010AF2WK, A selects the automatic drain, which ejects collected condensate on its own instead of waiting for a manual or differential-pressure drain cycle, and W selects the 5 um filter element instead of the 40 um standard. Both are catalogue choices for the GFR300 series; other drain types and the 40 um grade are available on other variants.
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.