The AirTAC GFR300C08MC2 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 GFR300C08MC2 is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a 1/4 in PT port. This configuration carries the standard 40 um filter element, a manual drain on the bowl, and a round external pressure gauge scaled in psi. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and maximum working (inlet) pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing. A mounting bracket is included; no reverse/check valve is fitted on this unit.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in and PT (standard), G or NPT threads to order. Options across the family include a 5 um filter element (code W), automatic or differential-pressure drain in place of manual, embedded square or external round gauges scaled in MPa, psi or bar, and a low-pressure regulator type. The bowl on this size-300 unit is PC (polycarbonate); only size 600 uses an aluminium alloy bowl. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request.
| Model | GFR300C08MC2 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) |
Feeding a bench-mounted pneumatic press cylinder: the 40 um element keeps machining swarf and condensed water out of the valve stack, while the regulator holds a steady set pressure so press stroke behaviour stays repeatable shift after shift. The manual drain suits a line where an operator bleeds the bowl at start-up.
Supplying paint spray guns in a body-shop booth: clean, dry, regulated air at the gun is what keeps finish quality consistent. The 1/4 in PT port matches standard booth hose whip ends, the psi-scaled round gauge lets the painter set and read pressure in the unit used on the gun spec sheet, and the bracket mounts the unit at the booth wall.
Running the flap-tuck and tape-head cylinders on a carton-sealing machine: the filter stage stops water and cardboard dust reaching the directional valves, and the regulator sets the cylinder pressure the machine builder specified. The manual drain fits a machine that is blown down as part of the daily changeover routine.
Size and port: the GFR family steps through sizes 200, 300, 400 and 600, with ports from 1/8 in to 1 in - step up a size when the application needs more flow through the same port, and match the port to your existing piping (this unit is 1/4 in PT; G and NPT threads are order options). Drain: manual drain means someone opens the bowl drain periodically; choose automatic or differential-pressure drain if the installation is unattended. Filter grade: 40 um is the standard element; specify 5 um (code W) where finer particulate protection is needed. Gauge: embedded square gauges are standard and external round gauges are optional, with MPa, psi or bar scales - this unit carries the round gauge in psi. A mounting bracket is included on this unit. Flow for the family is published as curves, not a single rated figure, 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 GFR family as performance curves rather than a single rated figure, so there is no one rated flow number we can quote for this unit. Tell us your application and we will confirm the flow from the datasheet curves on request before you order.
This configuration (code M) has a manual drain: the bowl is drained by hand at intervals, which suits attended installations. The GFR family is also available with automatic drain (code A) or differential-pressure drain (the default, blank code) - both suit unattended or hard-to-reach mounting points. Note that the regulator adjustment range depends on drain type: manual-drain units adjust from 0.05-0.9 MPa (7-130 psi), while automatic and differential-pressure drain units adjust from 0.15-0.9 MPa (20-130 psi).
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.