The AirTAC GFR30008C2WK AirTAC Filter Regulator PT1/4, 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 GFR30008C2WK is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure in one body. This configuration carries a 1/4 in PT port, a 5 um filter element (one step finer than the 40 um standard), a differential-pressure drain that bleeds condensate automatically whenever the pressure drop across the element rises, a round external gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the supply is lost. The regulator adjusts from 0.15-0.9 MPa (20-130 psi), the unit accepts up to 1.0 MPa (145 psi) inlet, and it operates from -5 to 70 C (non-freezing). The polycarbonate bowl is fitted with a mounting bracket.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) spanning 1/8 in to 1 in ports, with manual or automatic drain options, a 40 um or 5 um element, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads to order. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008C2WK AirTAC Filter Regulator PT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT 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. |
| (blank) | Mounting bracket included. |
| (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. |
| (blank) | PT 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) |
Feeding clamps and small press cylinders on an assembly line, where the 5 um element protects valve spools from particulate and the check valve holds the clamp pressure if the main supply drops.
Supplying divert gates, baggers and sealing jaws on a packaging conveyor, with the regulator set once at the machine and the psi gauge giving operators a visible setpoint.
Point-of-use conditioning for bench-top pneumatic test rigs and lab automation, where the finer 5 um grade and automatic differential-pressure drain keep instrument air clean without daily bowl attention.
Start with the port step: this unit is 1/4 in PT, so match it to your downstream line size and confirm the flow requirement against the published curve - we will check the datasheet with you, since AirTAC does not publish a single rated-flow figure. Choose the drain to suit access: this model uses the differential-pressure drain, which discharges automatically on pressure drop; a manual-drain variant (with a wider 0.05-0.9 MPa adjustment range) or a fully automatic drain can be ordered instead. The 5 um element here suits instrument and precision-actuator circuits; the 40 um standard element suits general plant air. The round psi gauge is fitted as coded (embedded square gauges in MPa/psi/bar scales are alternatives), the check valve is built in, and a mounting bracket is included. PT is the standard thread; G and NPT are order options. Confirm sizing against the application with us 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 this series as curves rather than a single rated figure, so we do not quote a l/min or SCFM number. Send us your application details and we will confirm the datasheet curve and sizing for your 1/4 in PT line before you order.
The W code on this model orders the 5 um element instead of the 40 um standard. The finer grade suits precision valves, instruments and pilot circuits where smaller particles matter; general plant air for cylinders and hand tools is usually well served by the 40 um standard. Both grades are available across the GFR300 series, and the differential-pressure drain on this unit discharges collected condensate automatically as the element loads.
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.