The AirTAC GFR30008JC2WGK AirTAC Filter Regulator G1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" 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 GFR30008JC2WGK is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This size 300 unit carries a G1/4 (BSPP) port, a 5 um filter element for finer filtration than the standard 40 um grade, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. Outlet pressure is set across the standard 0.15-0.9 MPa (20-130 psi) adjustment range, read on the fitted external round gauge with a psi scale, and a reverse/check valve holds the setting when upstream supply is lost. The polycarbonate bowl is rated for -5 to 70 C, non-freezing, and this configuration comes without a mounting bracket.
This is a genuine AirTAC part from the GFR300 series. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and can be ordered with manual or automatic drains, a 40 um or 5 um element, embedded square or external round gauges in MPa, psi or bar scales, a reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30008JC2WGK AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 08 | Port size PT1/4". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, regulated air to the tool-change and clamping circuits of a CNC machining centre, where the 5 um element protects the pilot valves from fine particulate and the check valve holds clamp pressure through supply dips.
Serves the pneumatic diverter gates and sealing jaws on a carton packaging line, keeping a stable set pressure on the psi gauge so seal force stays consistent across shifts while condensate is drained from the bowl.
Supplies the actuated valves on a laboratory test rig, where the fine 5 um grade and precise 0.15-0.9 MPa regulation give clean, repeatable air to instruments and small cylinders fed through G1/4 lines.
Size 300 with a G1/4 port is a common step for point-of-use supply on machines with moderate air demand; step up to size 400 or 600 if the circuit feeds several actuators, and down to size 200 for single small cylinders. The 5 um element on this unit suits circuits with sensitive valves or instruments; the standard 40 um grade is fine for general actuator supply. The differential-pressure drain works well on steady, regularly used lines; choose an automatic drain for intermittently loaded lines or a manual drain where an operator checks the bowl routinely. The fitted round psi gauge matches US practice, and the reverse/check valve is worth keeping where a dropped supply must not dump the regulator setting. Thread is G (BSPP) here; PT is the catalogue standard and NPT is an order option, so match it to your fittings. Bracket is not included on this code. Flow is published as curves, not a single rating, so 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so we do not quote a number that could mislead your sizing. Send us your application details and we will confirm the relevant flow and datasheet figures on request before you order.
The W in the code GFR30008JC2WGK selects the optional 5 um filter grade, which removes finer particulate than the 40 um standard element. It suits circuits with pilot valves, instruments or other sensitive components; for general cylinder and actuator supply the 40 um grade is normally sufficient, and both grades are available 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.