The AirTAC GFR300C08C2WGK 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 GFR300C08C2WGK is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in one body. This configuration carries a G1/4 (BSPP) port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds condensate automatically whenever the pressure differential is high enough, a round external gauge reading in psi, and a built-in reverse/check valve that holds the downstream setting if the supply is lost. A mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR series is published in sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, gauge style and scale, and PT, G or NPT threads. 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 before ordering.
| Model | GFR300C08C2WGK 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) |
Feeds clean, regulated air to the tool-clamp and chip-clearing circuits of a CNC machining centre, with the 5 um element protecting the clamping valves from water and fine swarf carried in shop air.
Sits upstream of the directional valves driving carton-forming and sealing cylinders on a packaging conveyor, holding a steady set pressure so the seal stroke repeats consistently through the shift.
Prepares the supply to pneumatic grippers on a pick-and-place robot, where the check valve holds the gripper pressure if the plant air dips and the 5 um grade keeps the small gripper valves clean.
Size and port set the ceiling on flow: the 300 size with a G1/4 port sits in the middle of the GFR range, one step above 200 and below 400 and 600, so step up if your demand sits near the top of the flow curve. This unit already carries the 5 um element; the catalogue alternative is 40 um standard, which suits general shop air where finer filtration is not required. The differential-pressure drain is the default and needs no operator attention, while automatic (A) and manual (M) drains are order options. The fitted round gauge reads in psi; embedded square gauges with MPa, psi or bar scales are the alternative. The G (BSPP) thread is a catalogue option ordered in place of the PT standard, and NPT is also available. A mounting bracket is included with this code.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote a figure here. Send us your application details and we will confirm the sizing and datasheet figures 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, downstream demand and acceptable pressure drop, and we will confirm the sizing against the datasheet curves before you order.
The W in the code selects the 5 um element, the finer of the two catalogue grades, against the 40 um standard; choose 5 um where downstream valves and instruments need cleaner air. This unit uses the differential-pressure drain, the catalogue default, which discharges collected condensate automatically when the differential across the drain is high enough, with no manual draining required.
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.