The AirTAC GFR300C08F2WG AirTAC Filter Regulator G1/4, 5 um 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 See datasheet ports, a differential-pressure 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 GFR300C08F2WG is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit carries G1/4 (BSPP) ports, a 5 um filter element (the W grade, against the 40 um standard), a differential-pressure drain, and an embedded square gauge reading in psi. With this drain type the standard regulator covers 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl suits non-freezing compressed air from -5 to 70 C, a mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR300 belongs to AirTAC's G-series filter regulator line in four sizes (200, 300, 400 and 600), each available with differential-pressure, automatic or manual draining, 40 um or 5 um filtration, the embedded square gauge or an optional external round gauge with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C08F2WG AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Filtered, regulated air to the pneumatic clamps and tool-change cylinders on a CNC machining center, with the 5 um element protecting tight-tolerance valves from scale and pipe debris.
Steady downstream pressure for the diverter and stopper cylinders along a bottling or packaging conveyor, with the differential-pressure drain handling collected condensate without manual attention.
Clean, regulated air at the spray-gun manifold of an automotive refinish booth, where the 5 um grade and a set pressure keep the gun supply consistent through the shift.
The real choices within GFR300: step port size (1/4 in here, with 1/8 to 1 in across the series) against the air demand of your line; drain type - differential-pressure (this unit, carrying the 0.15-0.9 MPa / 20-130 psi adjust range), automatic, or manual (which widens the adjust range to 0.05-0.9 MPa / 7-130 psi); filter grade, 40 um standard or the finer 5 um coded W here for tighter protection of downstream equipment; gauge scale, psi on this unit with MPa or bar available; and thread, where PT is the standard and G (BSPP, fitted here) or NPT are catalogue options to order. A mounting bracket can be included or omitted. Flow is published as curves rather than one rated number, so send us your operating conditions 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. 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 as curves rather than a single rated figure, so there is no one rated flow number we can quote. Send us your operating pressure and expected air demand and we will confirm the sizing from the datasheet on request.
The differential-pressure drain (the default, and what this configuration carries) discharges condensate without manual attention and gives the standard 0.15-0.9 MPa (20-130 psi) regulation range. The manual-drain version widens the adjust range to 0.05-0.9 MPa (7-130 psi), and an automatic drain is also available in the series.
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.