The AirTAC GFR30015LJF2T 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 differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30015LJF2T is a 300-size filter regulator in the GFR family: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is the low-pressure type, fitted with a 1/2 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and an embedded square gauge scaled in psi. No mounting bracket is included, so plan the piping or a separate support to carry the unit.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with a choice of PT, G or NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, standard or low-pressure regulation, gauge scale options and bracket or no-bracket builds. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30015LJF2T AirTAC Filter Regulator, NPT1/2, Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 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) |
Fixture clamps and hold-downs that are set to run at reduced line pressure get both clean, moisture-reduced air and a stable regulated supply from one body, with the psi gauge giving operators a local setpoint readout.
Packaging lines running cylinders and small actuators at modest pressures use this 300-size filter regulator at the machine drop: the 40 um element protects directional valves, and the differential-pressure drain keeps condensate moving without a daily manual blow-down.
Process skids and control panels that feed positioners, transducers and pilot valves need filtered, regulated air at low pressure; the low-pressure regulation type and psi-scaled gauge suit these circuits, and the NPT1/2 port ties into standard skid piping.
Start with the port step: sizes 200, 300, 400 and 600 step up in port and flow capacity, so match the size to the air demand of the circuit rather than the pipe alone. This unit is 300 size with a 1/2 in NPT port. Choose the drain to suit access: the differential-pressure drain here works unattended, an automatic drain (code A) suits intermittent flow, and a manual drain (code M) suits supervised stations. Filtration is 40 um as standard; specify 5 um (code W) where downstream valves or instruments need finer protection. The embedded square gauge here reads in psi; MPa and bar scales are also available. Thread is NPT on this unit, with PT as the catalogue standard and G (BSPP) as an option, and the J code means no bracket is fitted. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing against the datasheet 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 performance curves, not as a single rated figure, so there is no one l/min or SCFM number we can honestly quote for this 300-size, 1/2 in NPT unit. Send us your application details and we will confirm the datasheet curves and check the sizing against your air demand before you order.
This unit has the differential-pressure drain (the blank drain code): condensate collected in the PC bowl is bled off automatically as air flows through the unit, so no daily manual draining is needed. If your line runs intermittently or you want positive control, the catalogue also offers an automatic drain (code A) and a manual drain (code M) on 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.