The AirTAC GFR300C08ALC1WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08ALC1WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration carries a 1/4 in NPT port, a 5 um filter element (the finer of the two published grades), an automatic drain that expels collected condensate without manual attention, and a metal bowl. It is the low-pressure regulator type, and it is supplied with a round MPa gauge, a fitted reverse (check) valve and a mounting bracket.
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200, 300, 400, 600) and is available with alternative ports, manual or differential-pressure drains as well as automatic, a 40 um standard or 5 um fine element, square or round gauges with MPa, psi or bar scales, and G or NPT threads in place of the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08ALC1WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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 a bench pneumatic press or clamping fixture that runs below standard shop-air pressure. The low-pressure regulator type suits circuits set well under normal line pressure, while the 5 um element helps keep debris away from cylinder seals and valve seats.
Supplying atomizing air to paint, adhesive or coating equipment where the air must be cleaned of water and fine particles and held at a steady, reduced pressure. The automatic drain handles condensate so the booth does not depend on an operator bleeding the bowl.
Conditioning air for carton sealers, wrappers and case packers on a packaging line. The fitted reverse (check) valve holds the downstream circuit against backflow, and the round MPa gauge lets the line technician verify the regulated setting at a glance.
The real choices on this family: step size (200/300/400/600) and port against the flow your circuit needs; drain type - automatic here, with manual and differential-pressure available; element grade - 5 um fitted, 40 um standard; gauge type and scale - this unit carries a round MPa gauge; thread - NPT here, with G and PT as catalogue options; and bracket, which is included. Because rated flow is published only as curves, not as a single number, send us your application details and we will confirm 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Send us your inlet pressure, port size and downstream demand and we will confirm the flow figures from the datasheet on request before you order.
This GFR300C08ALC1WTK is the low-pressure regulator variant of the GFR300 series, intended for circuits regulated below standard line pressure. The exact adjustment range for this variant is not published in the material we hold, so tell us the set pressure you need and we will verify suitability from the datasheet on request.
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.