The AirTAC GFR300C08C2WG 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 GFR300C08C2WG is a size 300 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This configuration carries a 1/4 in port with G (BSPP) thread, a 5 um filter element (the finer W grade, versus the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises, and a standard regulator with a 0.15-0.9 MPa (20-130 psi) setting range. An external round gauge scaled in psi is fitted so operators can read and adjust the set point directly, and a mounting bracket is included for panel or wall fixing. No reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of drain type (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT thread. Flow for this unit is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C08C2WG 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 gripper and clamp cylinders on a robotic welding cell, with the 5 um element protecting valve spools from fine particulate and the psi gauge letting the cell technician set and verify clamp pressure.
Mounted on the frame of a carton packaging conveyor, it conditions the air feeding divertor and hold-down cylinders, keeping condensate and grit out of the directional valves while holding a stable pressure set point shift after shift.
Prepares the air line at a paint spray station in a metal-finishing shop: the 5 um grade helps keep fine contamination away from the spray gun and the regulator sets the atomising pressure read directly on the psi gauge.
Size 300 with a 1/4 in port sits in the middle of the GFR range; step up to 400 or 600, or down to 200, according to the flow your line needs - we can check the published flow curves against your demand before you order. The 5 um element (code W) suits downstream equipment that is sensitive to fine particles; choose 40 um where coarser protection is enough. The differential-pressure drain here needs no operator action, but automatic (A) and manual (M) drain versions exist if your maintenance routine prefers them. The fitted round gauge is scaled in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is G (BSPP) on this unit; PT is the standard thread and NPT is available to order. A bracket is included. Because flow is published as curves and not a single rating, 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 GFR300 as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure and the air demand of your equipment and we will confirm the sizing from the datasheet curves on request before you order.
The W code on this model specifies the 5 um element, one grade finer than the 40 um standard. It is the usual choice upstream of pilot valves, precision cylinders and spray equipment that tolerate less fine particulate. If your application only needs coarse protection, the 40 um grade is available in the same GFR300-08 configuration.
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.