The AirTAC GFR30008LC2WTK AirTAC Filter Regulator 1/4 NPT 5um 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 GFR30008LC2WTK is a GFR300 filter regulator: filtration and pressure regulation combined in one body, with a drain bowl but no lubricator. This configuration is built for a 1/4 in NPT port, uses the 5 um filter element (code W, against the 40 um standard), drains by differential pressure, and is the low-pressure regulator type. It carries a round psi gauge, a built-in reverse/check valve and a mounting bracket. The polycarbonate bowl suits non-freezing compressed air from -5 to 70 C, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 in and PT, G or NPT threads. Flow for the GFR300 is published in the AirTAC catalogue as curves rather than a single rated figure, so we confirm datasheet and sizing figures for your application on request.
| Model | GFR30008LC2WTK AirTAC Filter Regulator 1/4 NPT 5um |
|---|---|
| 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 | 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. 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". |
| (blank) | Drain: Differential-pressure 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). |
| 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. |
| 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) |
Filtered, regulated air for the pick-and-place cylinders on a carton-packing line: the 5 um element keeps water and particulate out of downstream seals and valves, while the built-in check valve blocks backflow in the supply line.
The low-pressure regulator type suits clamping circuits on a woodworking press where actuators do not need full line pressure, and the round psi gauge gives the operator a direct pressure readout at the machine.
Air preparation for gate and divert actuators on a bottling conveyor: the 5 um grade protects solenoid valves from water and dirt, and the differential-pressure drain clears the bowl automatically while the line runs.
Choices you can decode on this series: step size (200/300/400/600) and port (1/8 to 1 in) against the air your line needs; drain type - differential-pressure (this unit), automatic (A) or manual (M); filter grade - 40 um standard or 5 um with W, as fitted here; gauge - embedded square as standard or an external round gauge with MPa, psi or bar scales (this unit carries the round psi gauge); thread - PT as standard with G and NPT as order options (this unit is NPT); and bracket, included here. The L in this code selects the low-pressure regulator type; its exact adjustment range is not published in the catalogue, so ask us to confirm it. Flow is published as curves, not a single rating - send us your application 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR300 flow as curves in the catalogue, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and the air your application needs, and we will confirm the sizing from the datasheet on request.
In the GFR code, W selects the 5 um filter element instead of the 40 um standard, and K fits a reverse/check valve. This unit has both, plus the low-pressure regulator type (L), a round psi gauge (C2), a differential-pressure drain and NPT thread (T). If you would rather have the 40 um element, no check valve, or a PT or G thread, ask us and we will quote that variant.
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.