The AirTAC GFR30015ALF2GK 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 GFR300 series combines water and particulate filtration with pressure regulation in a single body. This GFR30015ALF2GK is the 300-size unit with a G1/2 (1/2 in) port, the low-pressure regulator type, a 40 um standard filter element, an automatic drain and a reverse/check valve fitted. The embedded square gauge reads in psi, a mounting bracket is included, and the polycarbonate bowl lets you see collected condensate at a glance.
This is a genuine AirTAC part. G-series filter regulators are available in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, PT as the standard thread and G or NPT to order, plus manual or differential-pressure drains, a 5 um element option and MPa, psi or bar gauge scales. Because flow is published as curves rather than a single rated figure, we confirm the datasheet figures for your application on request.
| Model | GFR30015ALF2GK 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 | 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. |
| (blank) | Mounting bracket included. |
| (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. |
| 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) |
Supplying filtered, low-pressure regulated air to directional valve islands and small actuators on packaging lines, with the automatic drain clearing condensate between shifts and the check valve holding the set pressure against backflow.
Regulating low-pressure air to hold-down clamps and diverters on bottling or carton conveyor lines, where the 40 um element keeps debris out of the clamping cylinders and the psi gauge lets operators verify the set point.
Feeding low-pressure blow-off and debris-clearing jets on paper or film converting equipment, with filtered air protecting the jet nozzles and the low-pressure type regulator holding a gentle, stable setting.
Within the GFR300 series the real, decodable choices are the port step (1/8 to 1 in across sizes 200 to 600, matched to your required flow), the drain type (automatic as here, or manual or differential-pressure), the filter grade (40 um standard, 5 um with code W), the gauge scale (MPa, psi or bar) and the thread (PT standard, G or NPT to order). This unit is the low-pressure type, so its regulation range differs from the standard version; the exact range is not published in the catalogue, so confirm it with us. 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. 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 rather than a single rated figure, so we do not quote a flow number. Tell us your application and we will confirm the relevant datasheet flow figures for this 300-size, G1/2 unit on request before you order.
The L code means the regulator is the low-pressure variant rather than the standard version, intended for lower set pressures. The exact regulation range for the low-pressure type is not published in the catalogue, so confirm the range with us; the unit also carries an automatic drain, a 40 um element and a square psi gauge as decoded from the code.
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.