The AirTAC GFR30015MLJF2T AirTAC Filter Regulator NPT1/2 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 AirTAC GFR30015MLJF2T is a GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body, with no lubricator. This 300-size unit is configured with 1/2 in NPT ports, a manual-drain polycarbonate bowl, the standard 40 um filter element, and the low-pressure regulator type for circuits that run below normal line pressure. The embedded square gauge fitted to this code reads in psi, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of manual, automatic or differential-pressure drains, a 5 um element option, gauge scale choices and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30015MLJF2T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (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, 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. |
| J | Supplied without bracket. |
| (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. |
| (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) |
On a CNC fixture line where pneumatic clamps must close at a gentler set pressure than the shop main, this filter regulator cleans the supply and holds the lower regulated pressure the clamp cylinders need.
Ahead of the directional valves and small cylinders on a cartoning or wrapping conveyor, this unit removes water and debris from the shop air and regulates it down to the pressure the machine's actuator circuit was designed around.
In a plant where large pneumatic control valves take a clean, steady pilot supply at reduced pressure, this filter regulator conditions the instrument air line and keeps the pilot circuit at its set point, with the psi gauge giving a local reading.
Step up or down through sizes 200, 300, 400 and 600 to match the port and flow path your line needs; this code sits at 300 with 1/2 in NPT threads (PT is the standard thread, with G and NPT as order options). Because it is the low-pressure type, confirm your set-point band with us before ordering - the exact range for the low-pressure version is not published in the material we hold. Choose the drain to suit maintenance habits: this unit has a manual drain, meaning the bowl is drained by hand on a schedule, while automatic and differential-pressure drains are available on other codes. The 40 um element is standard; specify the W code if you need 5 um filtration. Gauge scale (MPa, psi or bar) and bracket inclusion are selectable, and flow is published as curves rather than a single rating - ask us to confirm sizing against your application before you order.
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 GFR series as curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, set pressure and the equipment you are feeding, and we will confirm the flow curves and correct size from the datasheet on request.
The M in the code selects a manual drain: collected water sits in the polycarbonate bowl until someone opens the drain by hand, so it suits stations visited regularly. If your installation is unattended, ask us about the same unit with an automatic or differential-pressure drain instead.
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.