The AirTAC GFR30010MLF2WK AirTAC Filter Regulator PT3/8, 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 GFR30010MLF2WK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is ported PT3/8, uses the finer 5 um filter element (code W) instead of the 40 um standard, and drains by hand through its manual drain. It is the low-pressure regulator type, with an embedded square gauge scaled in psi, a reverse/check valve fitted, and a mounting bracket included. The bowl is polycarbonate (PC); only size 600 units use an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus drain, filter-grade, gauge, thread and bracket options. Max inlet pressure is 1.0 MPa (145 psi) and working temperature is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR30010MLF2WK AirTAC Filter Regulator PT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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. |
| (blank) | PT 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) |
On a CNC fixture line, low-pressure regulation keeps clamping cylinders from over-squeezing delicate workpieces, while the 5 um element helps protect the directional valves feeding the clamps.
A packaging line's gripper and lift cylinders draw conditioned air through this unit; the check valve helps hold the downstream circuit against upstream pressure dips, and the manual drain is bled during scheduled shift checks.
In a finishing line where atomizing and actuation air must sit well below standard line pressure, the low-pressure regulator type sets a gentle downstream pressure and the 5 um grade supports cleaner air at the spray equipment.
Size and port step together: 200, 300, 400 and 600 map to ports from 1/8 to 1 inch, so choose the port that matches your line and let us confirm the flow curve against your air consumption before ordering. Drain type is a real operating choice: a manual drain like this one needs an operator to bleed the bowl, while automatic and differential-pressure drains discharge condensate on their own. The 5 um element (code W) suits finer air-quality requirements; 40 um is the standard grade. The square gauge on this unit reads psi; MPa and bar scales, and an external round gauge, are options. Thread is PT as standard, with G (BSPP) and NPT available to order, and a mounting bracket is included (J-coded variants omit it). Because this is the low-pressure type, ask us to confirm the exact regulation range from the datasheet for your setpoint.
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, not as a single rated figure, so we do not quote a number here. Tell us your port size and application and we will confirm the relevant flow and datasheet figures for the GFR30010MLF2WK on request before you order.
Condensate collects in the polycarbonate bowl and must be drained by hand at intervals you set. If you would rather not do that, GFR variants with an automatic drain or a differential-pressure drain discharge condensate on their own, and we can quote those codes for the same PT3/8 size.
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.