The AirTAC GFR30015LJF2G AirTAC Filter Regulator G1/2 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 GFR30015LJF2G is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This configuration has G1/2 ports, a 40 um filter element, a differential-pressure drain, a low-pressure regulator type and an embedded square gauge scaled in psi, and it is supplied without a mounting bracket. It is rated for a maximum inlet pressure of 1.0 MPa (145 psi) and operates from -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR300 size family, which spans sizes 200 to 600 with port options from 1/8 to 1 inch and PT, G or NPT threads. Drain type, filter grade, gauge style and scale are selectable across the range. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR30015LJF2G AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) 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. |
| G | G (BSPP) 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) |
Feeding clean, regulated low-pressure air to the clamp cylinders on a machining fixture, with the 40 um element keeping debris out of the clamp valves and the psi gauge letting the setter read the clamp setting directly.
Supplying filtered, regulated air to the sealing jaws and small actuators on a packaging machine, where the low-pressure regulator type suits circuits that run at modest set pressures and the bowl drain clears condensed water between shifts.
Conditioning the air supply to air-operated valves and positioners on a process skid: particulate and water are removed before the regulator, and the square psi gauge gives operators a local reading of actuator supply pressure.
Size and port set the air-handling capacity: this GFR300 build carries G1/2 ports, and stepping up or down a size changes both the port and the flow curve. Where a bowl is fitted you choose the drain - differential-pressure (this unit), automatic (code A) or manual (code M) - and the element is 40 um standard with 5 um available as code W. Gauge style and scale (MPa, psi or bar), thread (PT is the standard; G and NPT are order options) and the bracket choice complete the decode. Because flow is published as curves rather than a single rated figure, 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. 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 series 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 inlet pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request.
This unit's drain is the differential-pressure type: it discharges collected condensate when the pressure drop across the filter element rises to a set level, with no operator input needed. If you prefer hands-off purging or a manual dump, the GFR300 family is also available with automatic (code A) or manual (code M) drains - just order that variant.
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.