The AirTAC AirTAC GFR300C08JC2 Filter Regulator PT1/4 Round psi Gauge 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 GFR300 is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single body, so one component does the job of a filter and a regulator. This configuration has a PT1/4 (1/4 in) port, the standard 40 um filtration element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the bowl is high enough - no daily manual draining on lightly loaded lines. The standard regulator covers a 0.15-0.9 MPa (20-130 psi) setting range, an external round gauge with a psi scale is fitted for direct reading, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The size-300 bowl is polycarbonate, which lets you see the condensate level at a glance.
This is a genuine AirTAC part from the GFR series, which spans four sizes (200, 300, 400, 600) with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT thread options to order. Flow is published by AirTAC as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | AirTAC GFR300C08JC2 Filter Regulator PT1/4 Round psi Gauge |
|---|---|
| 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 to the tool-changer and clamping cylinders on a CNC machining centre: the 40 um element strips water and swarf-carrying particulate before the regulator holds a steady setting for repeatable clamping.
Point-of-use prep for the pneumatic sealers and forming heads on a packaging line: the filter-regulator drops header pressure to the level the machine's valve island was specified for and drains condensate on its own between shifts.
Air prep for diverters, stoppers and pushers along a conveyor line: the round psi gauge lets line staff verify the setting at a glance, and the polycarbonate bowl shows condensate build-up without stopping the line.
Size this unit by the flow your line needs: step up from size 300 to 400 or 600 (or down to 200) to match the port and flow band, with ports from 1/8 in to 1 in across the series. Choose the drain to suit access: differential-pressure (this unit) for unattended operation, automatic for continuous condensate removal, or manual where you want scheduled draining. Keep the standard 40 um element for general plant air, or order the W variant with the 5 um element where downstream valves and cylinders need finer filtration. Gauge scale is selectable (MPa, psi or bar - this unit carries a round psi gauge), and thread is PT as standard with G (BSPP) and NPT available as order options; a mounting bracket can be added if you want the unit secured independent of the piping.
One honest note before you order: AirTAC publishes flow for this series as curves, not as a single rated number, so there is no honest one-figure rating we can quote here. Send us your application details and we will confirm the sizing against the datasheet curves before you commit.
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 performance curves rather than a single rated figure, so there is no honest one-number rating to quote here. Tell us your line pressure, downstream demand and allowable pressure drop, and we will confirm the flow figures from the datasheet curves for your application on request before you order.
The differential-pressure drain fitted here opens to expel condensate whenever the pressure differential across the bowl rises high enough, so the bowl empties itself during normal operation without anyone touching it. If your usage pattern suits scheduled draining or continuous condensate loads instead, the same GFR300 body is available with a manual drain (code M) or an automatic drain (code A) - just ask 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.