The AirTAC GFR30015ALJF2W AirTAC Filter Regulator PT1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 5 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 GFR30015ALJF2W is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, sized for PT1/2 (1/2 in) ports. This configuration carries the 5 um filter element (code W) for finer removal of water and particulate than the 40 um standard element, an automatic drain that ejects collected condensate without manual attention, the low-pressure regulator type, and an embedded square gauge scaled in psi. The maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this size 300 unit is polycarbonate (PC), and no mounting bracket is included (code J).
This is a genuine AirTAC part. The GFR filter-regulator family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, standard or low-pressure regulation, and square or external round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR30015ALJF2W AirTAC Filter Regulator PT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Finishing lines running spray guns need air that is both free of water and particulate and held at the gentle, stable pressure the gun was set up for. This low-pressure-type filter regulator with a 5 um element and automatic drain fits that job at a PT1/2 drop from the main ring main.
Carton sealers, case packers and wrap stations use short-stroke pneumatic actuators that misbehave when line pressure drifts or condensate reaches the valves. This unit filters and regulates at the machine drop, with the automatic drain keeping the bowl clear between shifts.
Air knives used to blow dust or moisture off product on a conveyor line run at low, steady pressure and are sensitive to dirt in the supply. This PT1/2 filter regulator, set at the low pressure the knife needs and read on its psi gauge, conditions the feed at the point of use.
Step up or down through the GFR sizes (200 / 300 / 400 / 600) and their matching ports to suit the line size and air demand of the machine; this unit is the size 300 step at PT1/2. Choose the drain to match maintenance practice: automatic (this unit) drains condensate by itself, manual requires operator action, and the differential-pressure default drains on a pressure differential. The 5 um element (this unit) is the finer choice over the 40 um standard when downstream equipment needs cleaner air. Gauge scale here is psi on the embedded square gauge; MPa and bar scales and an external round gauge are alternatives. Thread is PT as standard, with G and NPT as order options, and a bracket can be ordered where this no-bracket configuration needs one. Flow 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 the GFR300 series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Send us your line pressure, set pressure and air demand and we will confirm the flow figures from the datasheet for this exact model before you order.
The A in the code selects the automatic drain: collected condensate is ejected from the polycarbonate bowl without an operator having to open it, which suits unattended or hard-to-reach mounting. The same GFR300 size is also available with a manual drain or with the differential-pressure drain as the default, so you can match the drain to your maintenance routine.
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.