The AirTAC GFR300C08MF2WGK 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 GFR300C08MF2WGK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in one body, so no separate filter and regulator are needed. This size 300 unit is configured with a G1/4 (BSPP) port, a fine 5 um filtering element for cleaner air than the standard 40 um grade, a manual drain for controlled bowl blowdown, an embedded square gauge reading in psi, and a built-in reverse (check) valve that keeps the set pressure intact when upstream supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl on this size is polycarbonate. A mounting bracket is included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of manual, automatic or differential-pressure drains, 40 um or 5 um filtering grades, gauge scales 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 to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08MF2WGK 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) |
Feeds clean, regulated air to the tool-clamp and pallet-change circuits of a CNC machining centre, where the 5 um element protects the precision actuation valves from water and fine particulate.
Sits at the drop point of a packaging line to supply the pneumatic diverters, pushers and sealing jaws, holding a steady working pressure so carton forming and sealing stay repeatable through the shift.
Prepares air for the clamping cylinders of a pneumatic press or fixture station, with the check valve holding the set clamping pressure if the main supply dips during another machine's demand peak.
Size and port step up together across the GFR range (200 to 600, 1/8 to 1 inch), so pick the size whose flow curve covers your demand with margin - we can check the curve against your consumption before you order. This unit already carries the finer 5 um element (code W) instead of the 40 um standard; choose 5 um where downstream valves, cylinders or instruments need cleaner air. Drain choice matters: manual drain (as here) means an operator opens the bowl drain periodically, while automatic and differential-pressure drains discharge condensate without attention - pick manual where visits are already routine. The square gauge is fitted here with a psi scale; MPa or bar scales and an external round gauge are alternatives. Thread is G (BSPP) on this code; PT is the standard and G or NPT are order options. A mounting bracket is included.
Because flow is published as curves and not a single rating, please confirm sizing with us against your actual air demand before ordering.
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 series as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Send us your operating pressure and air consumption and we will confirm the flow from the datasheet curve for this exact model on request.
The M in the code sets a manual drain: condensate collects in the polycarbonate bowl and an operator opens the drain to discharge it. Choose manual where the bowl is easily reached and checks are already part of the routine; choose the automatic or differential-pressure drain versions where the unit is mounted in a spot that is awkward to reach.
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.