The AirTAC GFR30008ALF2TK AirTAC Filter Regulator NPT1/4 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 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 GFR30008ALF2TK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and then regulates the pressure delivered downstream. This configuration is built with a 1/4 in NPT port, an automatic drain that empties the polycarbonate bowl without anyone opening it, a 40 um standard filter element, and the low-pressure regulator type (code L). A square pressure gauge scaled in psi is fitted as standard, a reverse/check valve (code K) is included, and a mounting bracket comes with the unit. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, manual or differential-pressure drains as alternatives to the automatic drain fitted here, a 5 um element available under code W, gauge scale choices and an optional external round gauge. Rated flow for this unit is published as curves rather than a single figure; ask us and we will confirm the datasheet figures for your application.
| Model | GFR30008ALF2TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 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, 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". |
| 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding air to quarter-turn actuator packages on process lines, where the filter section keeps rust and condensate out of the actuator internals and the regulator holds a steady supply pressure to the positioner and solenoid valves.
A filter regulator ahead of pneumatic clamping cylinders on a small assembly press: the 40 um element stops swarf and water reaching the cylinder seals while the regulator sets the clamping pressure the tooling was designed around.
Mounted at the drop point feeding divertor gates on a packaging conveyor, the unit conditions the air that strokes the gate cylinders and keeps the supply pressure steady as gates fire repeatedly through the shift.
The real choices in this family are all decodable from the code. Step up or down through sizes 200, 300, 400 and 600 to match the port and the flow your line needs - the 300 size here carries a 1/4 in NPT port. Drains come as automatic (this unit), manual (code M), or the differential-pressure default; automatic suits points that are not checked daily. The 40 um element is standard and a 5 um element (code W) is available when finer filtration is wanted. Gauges are embedded square as standard with MPa, psi or bar scales, and an external round gauge is optional. Thread is PT as the standard with G and NPT orderable - this unit is the NPT version. Brackets are included unless code J is specified. Because rated flow is published as curves rather than a single number, 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 flow for the GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet flow figures and check the sizing against your required flow before you order.
This unit carries code A, the automatic drain, which expels collected condensate from the polycarbonate bowl on its own - useful at points that are not checked daily. The alternatives in this family are the manual drain (code M) and the differential-pressure drain, which is the default when no drain letter appears in the code.
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.