The AirTAC GFR30015ALJF2K AirTAC Filter Regulator PT1/2 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 GFR30015ALJF2K is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This 300-size unit is supplied with a PT1/2 (1/2 in) PT thread, an automatic drain, a 40 um standard filter element, a low-pressure regulator type, an embedded square gauge reading in psi, and a fitted reverse (check) valve. The polycarbonate bowl lets you see collected condensate at a glance, and the automatic drain expels it without manual attention.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options including 5 um filtration (code W), manual or differential-pressure drains, gauge scale, thread (PT standard; G and NPT to order) and a mounting bracket. Flow for the series is published as curves rather than a single rating, so ask us to confirm the sizing figures from the datasheet for your application.
| Model | GFR30015ALJF2K AirTAC Filter Regulator PT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT 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 | Fitted (reverse flow permitted) |
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. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 circuit, filtered and regulated low-pressure air feeds the clamping cylinders. The automatic drain keeps condensate out of the clamps during long cycles, and the fitted check valve helps hold the downstream setting if the upstream supply dips.
On a filling and capping line, this unit conditions the air feeding gripper and pusher actuators. The 40 um element screens particulate before it reaches the valves, and the automatic drain handles moisture build-up across continuous shifts.
Diverters, stoppers and pusher cylinders on a packaging conveyor need clean air at a steady low regulated pressure. This filter regulator conditions the supply at the drop, with the square psi gauge giving operators a direct local reading.
Size the unit against the flow your line needs: this 300-size configuration carries a PT1/2 port. The automatic drain suits unattended duty; manual and differential-pressure drains are available elsewhere in the GFR range if you prefer manual control or air-saving operation. The 40 um element is the standard grade; a 5 um element (code W) is offered when finer particulate removal matters. The embedded square gauge on this model reads in psi, with MPa and bar scales available and an external round gauge as an option. Thread is PT as standard, with G (BSPP) and NPT as order options, and this configuration has no mounting bracket.
Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm the sizing from the datasheet before you order. This is the low-pressure regulator type, intended for circuits regulated at low pressures; its exact range is not published in the catalogue, so confirm it with us against your setpoint.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves, not as a single rated figure, so we do not quote a number here. Send us your application details - port size, duty cycle and setpoint - and we will confirm the sizing from the datasheet on request.
The automatic drain expels collected condensate from the polycarbonate bowl without manual attention, which suits unattended equipment. The GFR range also offers manual and differential-pressure drains, but this model is supplied with the automatic type. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
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.