The AirTAC GFR30015MLF2 AirTAC Filter Regulator, PT1/2, 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 PT1/2" 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 GFR30015MLF2 is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has 1/2 inch PT ports, a manual drain bowl in polycarbonate, the standard 40 um filter element, and the low-pressure regulator type. The embedded square gauge fitted here reads in psi, so operators can see and set line pressure at a glance without extra plumbing.
This is a genuine AirTAC part from the GFR300 series within the G-series range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, G, NPT or PT threads, automatic, manual or differential-pressure drains, a 5 um optional element, and gauge scale choices. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30015MLF2 AirTAC Filter Regulator, PT1/2, Low Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT 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, psi scale |
| Reflux valve | Not fitted |
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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Filter-and-regulate the air feeding clamp cylinders on a CNC fixture line, where clean, moisture-reduced air at a stable low set pressure keeps workholding repeatable through the shift.
Feed carton sealers, case erectors and label heads from a single GFR300 point-of-use station, with the psi gauge letting line technicians verify set pressure without tools.
Supply filtered, regulated air to pneumatic butterfly and ball valve actuators on a process skid, using the low-pressure regulator type where the actuator range sits below standard line settings.
Choose the size and port step against the air your application actually consumes: this unit is size 300 with PT1/2 ports, and moving up or down a size changes both the connection and the flow capacity. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. Other decodable choices: manual drain (simple periodic draining, suited to attended installations - automatic or differential-pressure drains suit unattended lines), the standard 40 um element versus the 5 um W option for finer filtration, gauge scale (this unit is psi; MPa and bar are available), PT as standard with G and NPT as order options, and the included mounting bracket. The low-pressure regulator type is selected where downstream equipment needs a lower set range than the standard version; we confirm its exact range on request.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back 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 there is no one l/min or SCFM number we can honestly quote. Send us your application's air demand and line pressure, and we will confirm the datasheet curves and check the sizing against your requirement before you order.
The M in the code means the polycarbonate bowl is drained by hand: an operator opens the drain periodically to remove collected water. That suits attended lines with regular checks. If the unit will sit in an inaccessible spot or run unattended, the automatic (A) or differential-pressure (blank) drain variants drain themselves - we can quote those as alternate codes in the same series.
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.