The AirTAC GFR300C08JC2WG AirTAC Filter Regulator G1/4, 5 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 AirTAC GFR300C08JC2WG is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This unit is built on the 300 size with a G1/4 (1/4 in) BSPP port, a 5 um filter element for finer filtration than the standard 40 um grade, and a differential-pressure drain that discharges collected condensate as the pressure drop across the element rises. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, an external round gauge reading in psi is fitted, and no mounting bracket or reverse/check valve is included. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the polycarbonate (PC) bowl suits this size (aluminium alloy bowls are used only at size 600).
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and is offered with manual, automatic or differential-pressure drains, 40 um or 5 um elements, embedded square or external round gauges in MPa, psi or bar scales, G, NPT or PT threads, and optional brackets. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C08JC2WG AirTAC Filter Regulator G1/4, 5 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) |
Feeding clean, regulated air to the tool-clamp and pallet-actuator circuits of a machining centre: the 5 um element keeps particles out of the directional valves, and the regulator holds a steady clamp pressure shift after shift.
Supplying a carton packaging line where stopper, clamp and pusher cylinders need consistent pressure to cycle predictably; the differential-pressure drain handles condensate on a line that runs most of the day without an operator at the unit.
Conditioning shop air for a laboratory test rig or pneumatic instrumentation panel, where the 5 um element protects sensitive components and the fitted psi gauge gives a direct readout at the bench.
Size and port step up from 200 through 600 as demand rises; this unit sits at 300 with a 1/4 in port, so step to 400 or 600 if your flow curve requires more. Drain choice matters: differential-pressure (fitted here) purges on pressure drop without operator attention, automatic drains continuously, and manual drains only when opened. The filter grade here is 5 um (code W) against the 40 um catalogue standard - choose 5 um for finer protection of valves and actuators. The fitted round gauge reads psi; embedded square gauges and MPa or bar scales are the alternatives. Thread is G (BSPP) on this unit; PT is the standard thread and NPT is an order option, and the J code means no mounting bracket is fitted. Flow for the GFR series is published as curves, not a single rating, so send us your flow and pressure requirements 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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the datasheet figures and check the sizing for your application on request.
The W in the code specifies the optional 5 um element; the catalogue standard for the GFR series is 40 um. Choose 5 um where downstream valves, cylinders or instruments need finer protection, and 40 um for general plant air. Both grades are orderable across the GFR size range - tell us which you need and we will confirm the exact code.
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.