The AirTAC GFR30008LF2WTK AirTAC Filter Regulator 1/4 NPT 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 GFR30008LF2WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with 1/4 in NPT ports, the 5 um filter element (code W), a differential-pressure drain, the low-pressure regulator type, a built-in reverse/check valve, and the embedded square gauge with a psi scale. A mounting bracket is included, and the polycarbonate bowl lets you see accumulated condensate at a glance. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G or NPT threads. Drain type, filter grade, gauge scale and reverse-valve options let you match the unit to the circuit. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR30008LF2WTK AirTAC Filter Regulator 1/4 NPT |
|---|---|
| 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 — square, 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). |
| F | Gauge shape: Square. 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) |
Feeds spray guns on a finishing line: the 5 um element strips water and particles that ruin finishes, while the low-pressure regulator sets gun supply pressure and the square gauge shows the setpoint in psi.
Sits ahead of clamping cylinders on a machining fixture, cleaning the air and holding a steady low-pressure setpoint, with the built-in check valve blocking backflow toward the supply side.
Filters and regulates air to carton-sealer and case-packer cylinders, while the differential-pressure drain bleeds collected condensate during normal flow so the bowl does not flood the circuit.
The real choices in this series are all decodable from the code. Step the size (200/300/400/600) and its port - here 300 with 1/4 in - against the air your circuit needs, since larger sizes serve larger flows. Choose the drain: differential-pressure (this model), automatic, or manual. Choose the filter grade: 40 um standard or 5 um (code W) for finer protection, as fitted here. Pick the gauge scale (MPa, psi or bar - this unit reads psi) and whether to fit the reverse/check valve (code K, fitted here). Thread is PT as standard; G and NPT are order options, and this model carries NPT. A bracket is included unless code J deletes it. Because AirTAC publishes flow as curves, not a single rating, ask us to confirm sizing against your application before ordering.
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 the GFR series as curves rather than a single rated figure, so no single number is quoted here. Ask us to confirm flow from the datasheet against your application - we will check the sizing with you before you order.
The W code fits the 5 um element for finer particulate removal ahead of sensitive valves and actuators; the blank code is the 40 um standard element. Both are catalogue options on this filter regulator, and the differential-pressure drain works with either.
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.