The AirTAC GFR300C08MC2GK AirTAC Filter Regulator G1/4, Manual Drain 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 GFR300C08MC2GK is an AirTAC GFR300 filter regulator: water and particulate filtration and pressure regulation combined in a single body, so one unit strips condensate and particles down to 40 um and holds a set downstream pressure. This configuration is built around a G1/4 (BSPP) port on the 300 size, with a manual drain for the bowl, a round pressure gauge reading in psi, an integrated reverse/check valve, and a mounting bracket. It is rated for compressed air at up to 1.0 MPa (145 psi) inlet, with a regulation range of 0.05-0.9 MPa (7-130 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 inch, and options that include a 5 um filter element (code W), automatic or differential-pressure draining, square or round gauges with MPa, psi or bar scales, and G or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08MC2GK AirTAC Filter Regulator G1/4, Manual Drain |
|---|---|
| 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 clean, regulated air to the tool-change and clamping circuits of a CNC machining centre, where the 40 um element keeps shop-air contamination out of the valves and the regulator holds a steady set pressure for repeatable clamping.
Supplying filtered, regulated air to the cylinders and product diverters on a carton packaging line, with the manual drain opened during scheduled changeovers so condensate never reaches the downstream actuators.
Mounted on its bracket at the head of a machine's pneumatic panel, the check valve holds downstream pressure if the main supply drops, while the round psi gauge gives operators a local readout of the regulated setpoint.
Choose the size and port by the air demand of the line: the 300 size here carries a 1/4 in G-thread port, and each step up in size increases both port and flow capacity. Drain choice matters: manual draining (this unit) means the bowl is emptied by opening the drain as needed, while automatic and differential-pressure drains discharge condensate without operator attention. Filter grade is 40 um standard; specify 5 um (code W) where finer particulate protection is needed. Gauges are available as embedded square or external round, with MPa, psi or bar scales - this unit is fitted with a round psi gauge. Threads: PT is the standard, with G (BSPP) and NPT as orderable options, and a mounting bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application 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 GFR300 as curves rather than a single rated figure, so we do not quote one number. Send us your inlet pressure, set pressure and air demand, and we will confirm the flow figures from the datasheet before you order.
Manual drain means the bowl is emptied by opening the drain when condensate collects, which suits lines with scheduled maintenance rounds. Automatic and differential-pressure drain versions of the same GFR300 body are available, and a 5 um element (code W) can be specified in place of the 40 um standard.
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.