The AirTAC GFR30010MLF2WTK AirTAC Filter Regulator NPT3/8 5 um 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 PT3/8" 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 GFR30010MLF2WTK is a size-300 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one compact body. This configuration carries a 5 um filter element (code W), a manual drain bowl in polycarbonate, a low-pressure regulator type, an embedded square gauge scaled in psi, a built-in reverse/check valve, and comes with a mounting bracket. The port is 3/8 in with NPT thread. 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. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with different drain types, filter grades, gauge styles and scales, and G or NPT thread options. Flow is published as curves rather than a single rated figure, so contact us and we will confirm the datasheet and flow figures for your application on request.
| Model | GFR30010MLF2WTK AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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, 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Fixture clamps and swing cylinders on a CNC cell often run at reduced pressure to hold parts without distortion. This filter regulator cleans the shop air to 5 um and sets the clamp pressure, with the psi gauge giving a direct readout at the fixture.
Packaging machines with low-pressure air actuators - flap gates, pushers, hold-down shoes - need clean air and a gentle set pressure. The low-pressure regulator type, manual drain bowl and check valve make this unit a single drop-in point on the machine's air supply.
Textile and web-converting equipment uses air jets and light-duty cylinders that are sensitive to water and dirt. A 5 um element protects the nozzles and valves, and the regulator holds a steady low line pressure shift after shift.
Start with the size and port: size 300 with a 3/8 in port suits mid-range air lines, and the next size up (400) or down (200) moves you to larger or smaller flow capacity - we can confirm the flow curves against your demand before you order. This unit has the manual drain variant, which you empty by hand, and the 5 um element for finer filtration than the 40 um standard. The low-pressure regulator type is intended for lower set-pressure work; its exact adjustment range is not published in the catalogue, so ask us to confirm it. The square gauge is scaled in psi (MPa and bar scales are alternatives), and the reverse/check valve is already fitted. NPT thread is specified here; PT is the standard thread and G (BSPP) is also an order option. A mounting bracket is included.
Because flow is published as curves and 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 we do not quote one number. Tell us your line pressure, set pressure and air demand, and we will confirm the flow figures from the datasheet for this exact model on request.
The M in the code selects the manual drain bowl, which you empty by hand instead of relying on automatic or differential-pressure action - a good choice where the unit is easily accessible or where you want positive control over drainage. The W selects the 5 um filter element, finer than the 40 um standard, for downstream equipment that needs cleaner air.
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.