The AirTAC GFR30008MLF1TK AirTAC Filter Regulator NPT1/4 Low-Pressure 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30008MLF1TK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the size 300 unit with a 1/4 in NPT thread, a manual drain, the standard 40 um filter element, the low-pressure regulator type, an embedded square gauge scaled in MPa, a built-in reverse/check valve, and a mounting bracket. The polycarbonate bowl lets you see accumulated condensate, and the manual drain is emptied by hand.
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 (standard), G or NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge choices, and standard or low-pressure regulator types. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). We confirm flow and other datasheet figures on request - flow is published as curves rather than a single rating.
| Model | GFR30008MLF1TK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| (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 filtered, regulated air to spray guns and air-assist circuits at a paint booth drop, where the low-pressure type keeps the circuit in the range the booth actually runs at and the 40 um element keeps moisture and grit out of the finish.
Supplying clean, regulated air to low-pressure sealing and clamp circuits on a carton or blister packaging line, with the built-in reverse/check valve holding the circuit against backflow between cycles.
Providing fine low-pressure control on a workshop or lab bench that exercises valves, actuators and gauges, with the 40 um element and square MPa gauge protecting and monitoring the instruments under test.
Choose the size by the port and flow step: 200, 300, 400 and 600 map to larger ports (here 1/4 in NPT) and progressively higher flow capacity, so size up if your line draws more air. Drain type is a real choice: this unit has a manual drain (M), which you open by hand during maintenance, while automatic (A) and differential-pressure (the family default) drains suit installations you cannot visit often. Filtration is the standard 40 um element; specify W for the 5 um grade where downstream valves or instruments need finer air. The gauge here is the embedded square type scaled in MPa; psi or bar scales and an external round gauge are options. Thread is NPT on this code; PT is the standard and G is also orderable. The K code adds a reverse/check valve, and the bracket is included.
Flow is published as curves, not a single rated figure, so send us your required flow and operating pressure and we will confirm sizing against the datasheet before you order. This unit carries the low-pressure regulator type for circuits that run below standard settings; we confirm its exact adjustment range on request.
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. Tell us your required flow, inlet pressure and port, and we will confirm the sizing from the datasheet on request.
The M in the code means the polycarbonate bowl has a manual drain that you open by hand to purge condensate. If the unit is mounted where regular access is difficult, the same GFR family offers automatic (A) and differential-pressure (the default) drains - we can help you pick the variant that suits your maintenance routine.
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.