The AirTAC GFR300C08MC2K AirTAC Filter Regulator 1/4 in PT 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 GFR300C08MC2K is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one body. This size 300 unit is threaded PT1/4 (1/4 in), has a manual drain on a polycarbonate bowl, a 40 um standard filter element, a round pressure gauge reading in psi, a reverse (check) valve fitted, and a mounting bracket included. It regulates between 0.05 and 0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and is rated for -5 to 70 C (non-freezing).
This is a genuine AirTAC part. GFR filter regulators are available in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT, G or NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, and a choice of embedded square or external round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR300C08MC2K AirTAC Filter Regulator 1/4 in PT |
|---|---|
| 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) |
Clean, regulated air for tool changers, clamps and pneumatic actuators on a CNC machining centre, with the fitted check valve helping hold downstream pressure if the supply dips.
Feeding cylinders and actuators on a packaging conveyor line, where the 40 um element stops scale and pipe debris reaching the valves and the manual drain is emptied at shift checks.
Point-of-use air preparation at an assembly-station air drop, giving operators a psi gauge to set driver and press tool pressure to the job specification.
Size 300 with a 1/4 in PT port sits in the middle of the GFR range (200/300/400/600); step up or down a size when your flow demand does not match the port. This unit is set up for manual drain - choose automatic (A) or differential-pressure (blank) if the installation is hard to reach. The 40 um element is the standard grade; specify W for 5 um where finer filtration is needed. The round gauge here reads psi; embedded square gauges and MPa or bar scales are alternatives, and G or NPT threads can be ordered instead of PT. A bracket is included and a reverse/check valve (K) is fitted. Flow for this series is published as curves, not a single rated figure, so 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 we do not quote a number here. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The code specifies a manual drain: someone opens the drain at service intervals to expel collected water from the bowl. If the unit will be mounted where regular access is difficult, the same size is available with an automatic (A) or differential-pressure (blank) drain - ask us for that variant.
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.