The AirTAC GFR30008ALF1WTK AirTAC Filter Regulator NPT1/4 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 automatic 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 GFR30008ALF1WTK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, a low-pressure regulator type, an embedded square gauge scaled in MPa, and a reverse/check valve. It connects via a 1/4 in NPT port and operates at up to 1.0 MPa (145 psi) inlet pressure in a -5 to 70 C (non-freezing) environment. The polycarbonate bowl keeps the fluid condition visible at a glance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, 40 um or 5 um filtration, automatic, manual or differential-pressure drains, standard or low-pressure regulation, gauge options and scale choices, and an optional reverse/check valve. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30008ALF1WTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 clean, regulated air to a carton-sealing or wrapping line's pneumatic cylinders, with the automatic drain handling condensate through continuous shifts without operator attention.
Conditioning air for bench-top test rigs and lab actuators where the 5 um element protects sensitive instruments and the low-pressure regulator suits circuits that run below standard pressures.
Supplying filtered, regulated air to pneumatic valve positioners and control panels, with the MPa-scaled square gauge giving a direct local pressure readout at the panel.
Choose the 300 size with its 1/4 in NPT port where your line runs at that connection; step up to 400 or 600, or down to 200, as the application's flow demand dictates - we confirm the flow curve against your requirement before you order. This unit carries the 5 um element (W) for finer particulate removal than the 40 um standard, and the automatic drain suits unattended duty where regular manual draining is impractical. The low-pressure regulator type is selected where the circuit works below standard regulation ranges; we confirm the exact adjustment range from the datasheet on request. The square gauge is scaled in MPa; psi or bar scales and an external round gauge are alternatives in the family. NPT is specified here; PT and G threads are orderable options, and a mounting bracket is included.
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, not as a single rated figure, so we do not quote a number here. Tell us your application's flow demand and we will confirm the correct size from the datasheet before you order.
The W code in the model specifies the finer 5 um element instead of the 40 um standard, and the A code specifies an automatic drain that discharges condensate on its own. Both are catalogue options within the GFR family; manual and differential-pressure drains and the 40 um grade are available on other configurations.
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.