The AirTAC GFR300C08AJF2WGK 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 GFR300C08AJF2WGK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in a single body. This configuration is built on the GFR300 size with a G1/4 (BSPP) port, the finer 5 um filter element (code W, against the 40 um standard), an automatic drain that empties the metal bowl without operator attention, a built-in check valve (code K) that helps hold downstream pressure if the supply dips, and an embedded square gauge reading in psi. It is supplied without a mounting bracket (code J). Maximum inlet pressure is 1.0 MPa (145 psi) and the standard regulator on this unit adjusts from 0.15 to 0.9 MPa (20-130 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and can be ordered with manual or differential-pressure drains, a 40 um or 5 um element, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application - we will send the datasheet on request.
| Model | GFR300C08AJF2WGK 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 fixture clamps and tool-change cylinders on a machining centre: the 5 um element keeps pilot spool valves clean, the regulator holds a steady clamp pressure, and the check valve helps the setpoint survive brief supply dips.
Supplying carton sealers and case erectors on a packaging line, where the automatic drain handles condensate from continuous running and the square psi gauge lets line technicians verify setpoints at a glance.
Regulating supply to pick-and-place cylinders and air grippers in an automated assembly cell: the check valve limits pressure decay between cycles and the 5 um grade protects the fine control valves downstream.
Size and port step up together: 200 through 600, ports 1/8 to 1 in. Pick the size whose flow curve covers your air consumption with margin - since flow is published as curves, not a single rating, ask us to check your consumption against the GFR300 curve before ordering. Drain choice matters: automatic (this unit) expels condensate on its own, manual needs a periodic press, and differential-pressure drains only as the element loads up. Element grade: 40 um standard for general plant air, 5 um (W) where downstream valves and cylinders need finer protection. Gauges: embedded square as standard, external round optional, in MPa, psi or bar scales - this unit reads psi. Threads: PT is the standard; G (BSPP) and NPT are order options, and this unit is G. Brackets are optional on GFR; this configuration omits it.
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, not a single rated number, so we do not quote a figure here. Tell us your operating pressure and air consumption and we will confirm sizing against the datasheet curve on request.
The W code selects the finer 5 um element instead of the 40 um standard, suited to protecting precision valves and cylinders; the A code selects an automatic drain, so condensate is expelled from the bowl without manual attention. Both are order options across the GFR range.
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.