The AirTAC GFR300C08MC2WT AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08MC2WT is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with 1/4 in NPT ports, a 5 um filter element (the finer of the two catalogue grades), a manual drain on the metal bowl, a round pressure gauge reading in psi, and the included mounting bracket. The regulator is the standard type with a 0.05-0.9 MPa (7-130 psi) adjustment range, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR300 size sits in a family that spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options that include PT, G and NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, and embedded square or external round gauges in MPa, psi or bar scales. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08MC2WT AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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 cylinders that cap, push and sort bottles, with the 5 um element protecting seals from particulate and the manual drain clearing accumulated water at shift end.
Stable regulated pressure for clamps and tool-change actuators on a machining centre, with the round psi gauge giving the operator a direct reading at the setpoint.
Clean, regulated air to paint spray guns and air tools in a body shop, where the 5 um grade and manual-drain metal bowl help keep moisture and debris out of the finish.
Choose the size and port against the air consumption of the downstream circuit: size 300 with 1/4 in NPT ports suits compact circuits, while larger sizes carry bigger ports for higher-demand lines. This unit already carries the 5 um (W) element, manual drain, round psi gauge and NPT thread; the same series can be ordered with 40 um standard filtration, differential-pressure or automatic drains, square embedded gauges in MPa/psi/bar scales, PT or G threads, and with or without the bracket. Flow for this family is published as curves, not a single rating, so send us your application details and we will confirm sizing from 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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet flow figures for the GFR300 at 1/4 in NPT before you order.
The W code in GFR300C08MC2WT selects the optional 5 um grade; the catalogue standard is 40 um. Choose 5 um where downstream valves, cylinders or instruments need finer protection, and 40 um for general upstream duty. Both grades are available across the GFR range.
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.