The AirTAC GFR30015ALJF2G 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 automatic 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 GFR30015ALJF2G is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a 1/2 in G-threaded port. This configuration is built for low-pressure duty, drains condensate automatically from the PC bowl, carries the standard 40 um filter element, and has an embedded square gauge reading in psi. A reverse/check valve is not fitted and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part in the G-series range, which spans sizes 200, 300, 400 and 600 with a choice of ports, threads, drain types, 40 um or 5 um filtration, gauge styles and scales. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30015ALJF2G 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 | Automatic 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". |
| A | Drain: Automatic 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) |
Feeds filtered, regulated air to pneumatic clamps and hold-down fixtures on an assembly bench, where the low-pressure type keeps the supply matched to gentle clamping forces and the automatic drain keeps moisture out of the fixture circuit.
Conditions the air feeding carton sealers, labelers and wrapping heads on a packaging line, combining filtration and regulation in one body to save panel space while the 40 um element protects valves and cylinders from particulate.
Supplies clean, regulated low-pressure air to bench-top test rigs and pilot process equipment, with the psi-square gauge giving operators a clear local reading and the automatic drain handling condensate in intermittently run circuits.
Size 300 with a 1/2 in port suits lines where moderate-to-high air delivery matters; step up to size 400/600 or down to 200 depending on the flow your circuit needs. The automatic drain here discharges collected condensate without manual attention - choose manual or differential-pressure drain codes if you prefer hands-on or load-linked drainage. The 40 um element is the standard grade; specify code W for 5 um where finer particulate capture is required. The square gauge reads psi; MPa and bar scales and an external round gauge are alternatives. This is the low-pressure (L) type, so confirm the regulation span suits your setpoint before ordering. G thread is fitted here; PT and NPT versions are order options. A bracket is not included with this code (code J).
Flow for this series is published as curves, not a single rating, so 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 this series as curves rather than a single rated figure, so there is no one number we can quote. Tell us your working pressure and demand and we will confirm the sizing from the datasheet on request before you order.
The L code marks this as the low-pressure regulator type, intended for circuits regulated below the standard range; the exact regulation span is not published in the catalogue sheet, so we confirm it on request. The A code gives an automatic drain, which expels collected condensate from the PC bowl on its own instead of waiting for a manual drain pull. This unit also has a 40 um element, a square psi gauge, no reverse/check valve and no mounting bracket.
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.