The AirTAC GFR300C08F2WTK AirTAC Filter Regulator NPT1/4 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 GFR300C08F2WTK is a filter regulator: it removes water and particulate from compressed air and holds a regulated downstream pressure in a single body. This size 300 configuration is ordered with a 1/4 in NPT port, the W-code 5 um filter element, a differential-pressure drain, an embedded square gauge reading in psi, a fitted reverse/check valve (code K) and the mounting bracket included. The standard regulator covers 0.15-0.9 MPa (20-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature is -5 to 70 C, non-freezing. The bowl on the 300 size is polycarbonate.
This is a genuine AirTAC part. The GFR300 series sits in the G-family size steps (200/300/400/600) with port options from 1/8 in to 1 in, thread choices of PT (standard), G and NPT, drain types (differential-pressure, automatic or manual), 40 um or 5 um filtration, and gauge scales in MPa, psi or bar. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08F2WTK AirTAC Filter Regulator NPT1/4 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) |
Conditioning the air feeding the solenoid valves and actuators on a CNC machining centre: the 5 um element strips water and fine particulate before the valves, while the regulator holds the circuit at the pressure the machine builder specifies.
Supplying filtered, regulated air to the clamping cylinders on a production assembly fixture, where the psi-scale square gauge lets operators verify the set clamping pressure at a glance and the check valve is fitted in the line.
Feeding the cylinder-driven sealing, sorting and ejection stations along a packaging conveyor line, with one filter regulator per zone keeping water and debris out of the valves and the downstream pressure steady through the shift.
Choose the size and port against the air demand of the downstream circuit - here size 300 with a 1/4 in NPT port. Then settle the real decodable choices: filter grade (40 um standard, 5 um where finer protection is wanted - this unit carries the 5 um element), drain type (differential-pressure as fitted here, with automatic and manual as the alternatives), gauge and scale (embedded square gauge in psi on this code; MPa or bar available, external round gauge optional), thread (PT is the standard; G and NPT are order options), and the bracket, which is included on this code. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing against 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Send us your application's air consumption and working pressure and we will confirm the sizing from the datasheet on request.
The W in the code GFR300C08F2WTK selects the optional 5 um filter element in place of the 40 um standard grade. It is the right choice when downstream valves, gauges or instruments need finer protection; if 40 um is sufficient for your circuit, the non-W GFR300 codes carry the standard element.
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.