The AirTAC GFR300C08F2WK AirTAC Filter Regulator 1/4 in PT, 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 GFR300C08F2WK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/4 in PT port, a fine 5 um filter element, a differential-pressure drain that bleeds collected condensate whenever the pressure differential across the element rises, a square pressure gauge reading in psi, a built-in reverse/check valve that holds downstream pressure when the supply is lost, and a mounting bracket included. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, filter grades of 40 um standard or 5 um, a choice of drain type, gauge scale and thread (PT standard, with G and NPT as order options). Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08F2WK AirTAC Filter Regulator 1/4 in PT, 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 filtered, regulated air to the clamping cylinders and fixtures on a machining centre, where the 5 um element protects tight-tolerance clamp valves and the check valve holds clamp pressure if the shop air drops.
Supplies regulated air to the stopper cylinders, diverters and pushers along a packaging conveyor, keeping actuator speed consistent as the header pressure wanders through the shift.
Conditions the air feeding a lab automation manifold of small solenoid valves, where the 5 um grade keeps fine pilot valves clean and the psi gauge lets technicians set and verify the supply at a glance.
Size and port step up from 200 through 600, so pick the size whose flow curve covers your consumption at the working pressure - we can check the curve against your demand before you order. Drain type is a real choice on this family: differential-pressure (as fitted here) drains automatically with flow, automatic drains on a timer-free float principle, and manual drains need a operator to twist the bowl drain. Filter grade is 40 um standard or 5 um for finer protection of downstream valves and cylinders; this unit carries the 5 um element. Gauge scale is selectable (MPa, psi or bar) and this configuration reads psi. Thread is PT as standard, with G (BSPP) and NPT available to order. A bracket is included, and a reverse/check valve is fitted.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm the sizing from the datasheet 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 rather than a single rated figure, so we do not quote a rated flow number. Tell us your working pressure and air consumption and we will confirm the sizing from the datasheet on request.
The W code in the model number selects the 5 um filter grade, the finer of the two grades offered on this family (40 um is the standard). It is chosen where downstream valves, cylinders or instruments need finer protection from particulate. The differential-pressure drain and psi square gauge are decoded from the remaining positions of the code.
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.