The AirTAC GFR300C08F2W AirTAC Filter Regulator PT1/4, 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 GFR300C08F2W is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure in a single body. It takes a PT1/4 (1/4 in) port, carries the finer 5 um filter element (code W) instead of the standard 40 um grade, drains collected condensate by differential pressure, and is fitted with an embedded square gauge reading in psi. The standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl suits the 300 size, and the unit operates from -5 to 70 C in non-freezing air. A mounting bracket is included.
This is a genuine AirTAC part in the GFR300 series. The GFR line spans sizes 200 to 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, and MPa, psi or bar gauge scales. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C08F2W AirTAC Filter Regulator PT1/4, 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) |
Feeding a clean, pressure-controlled air supply to a pneumatic press or workholding clamp circuit, where the 5 um element protects directional valves and cylinders from water and fine debris while the regulator holds a stable setpoint.
Point-of-use air preparation for pick-and-place units, diverters and sealing jaws on a packaging conveyor, with the psi gauge letting operators set and check line pressure at the machine.
Mounted in a machine tool's air preparation panel to filter and regulate the supply feeding tool changers, air blasts and actuated gates, with the included bracket simplifying panel installation.
Within the GFR300 series the real choices are the port step (G-series sizes run 1/8 to 1 in, so step up or down against the air demand of the circuit), drain type (differential-pressure as fitted here, automatic, or manual - note that manual drain widens the regulation range down to 0.05 MPa), filter grade (40 um standard or the 5 um element fitted on this model), gauge scale (MPa, psi or bar), and thread (PT is the standard, with G and NPT as order options). A bracket is included with this unit. Because flow is published as curves and not as a single rated figure, send us your application details 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 series as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves before you order.
The W code on GFR300C08F2W selects the optional 5 um filtration grade, which removes finer particulate than the 40 um standard element. Choose 5 um when downstream valves, cylinders or tools need cleaner air; the standard 40 um grade is the usual choice for general plant air.
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.