The AirTAC GFR300C08C2G AirTAC Filter Regulator G1/4, 40 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 GFR300C08C2G is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This 300-size unit is fitted with a G1/4 (BSPP) port, a 40 um standard filter element and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and this configuration carries an external round pressure gauge with a psi scale for direct setpoint reading. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suited to the 300 size keeps the bowl contents visible, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 inch, optional 5 um (code W) elements, automatic or manual drains, alternative gauge scales, G or NPT thread options and low-pressure regulator variants. Flow is published in the AirTAC catalogue as curves rather than a single rated figure, so we confirm the exact flow and datasheet figures for your application on request.
| Model | GFR300C08C2G AirTAC Filter Regulator G1/4, 40 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) |
Point-of-use preparation for the clean, regulated air feed to a machining centre's pneumatic tool changer and clamping circuits, with the psi gauge set at the machine.
Filtering and regulating the air feeding cylinder banks on a carton forming and sealing line, where the differential-pressure drain keeps condensate off the valve manifold.
Conditioning the supply to gripper and pick-and-place valve islands on an assembly robot, holding a stable setpoint read directly off the round psi gauge.
Size and port step up together: 200, 300, 400 and 600, with ports from 1/8 to 1 inch, so pick the size whose flow curve covers your demand with margin - ask us to check the curve against your application before ordering. This model is already set for G1/4 (BSPP) thread; PT is the standard thread and G or NPT are catalogue options on other variants. Drain choice on GFR units is differential-pressure (default, as here), automatic (code A) or manual (code M); the filter element is 40 um standard or 5 um with code W. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit carries the round gauge in psi. A bracket is included on this variant (code J deletes it), and code K adds a reverse/check valve. Flow is published as curves, not a single rating, so confirm sizing with us 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 GFR flow as curves in the catalogue rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and full datasheet figures for this exact model on request.
GFR units normally carry an embedded square gauge; the C2 code in GFR300C08C2G specifies the optional external round gauge with a psi scale. Square-gauge versions and MPa or bar scales are available as separate catalogue variants if you prefer.
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.