The AirTAC GFR30015LF2K 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 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 GFR30015LF2K is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This unit is built with a PT1/2 port on the PT thread standard (G and NPT threads are order options), a 40 um standard filter element, a differential-pressure drain, a low-pressure regulator type, an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl suits the 300 size.
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200/300/400/600) with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 5 um optional element (code W), gauge scales in MPa, psi or bar, and G or NPT thread variants. Flow is published as curves rather than a single rated figure, so we confirm the datasheet figures for your application on request.
| Model | GFR30015LF2K 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 | Differential-pressure 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". |
| (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. |
| (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. |
| (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 forming or assembly press that runs its air cylinder circuit at reduced pressure, this unit filters incoming compressed air and holds the regulated supply steady, with the check valve holding the downstream setting if upstream pressure dips.
At a paint or coating booth, the 40 um element removes water and particulate from the atomising air line while the regulator sets the delivery pressure the gun or applicator needs, and the psi gauge gives the operator a direct readout.
On a cartoning or wrapping line with 1/2 in air drops, this filter regulator cleans and regulates the supply to actuators and vacuum generators, and the differential-pressure drain clears collected condensate during continuous running.
Start with the port step: the GFR300 carries PT1/2, and the 200/400 sizes step port size up or down - match the port to your line and let the required flow drive the size choice. Choose the drain for the duty: differential-pressure (as fitted here) drains under flow, automatic (code A) drains without operator attention, and manual (code M) drains on demand. Pick the element grade: 40 um standard for general air preparation, 5 um (code W) where finer filtration is needed. Select the gauge scale (MPa, psi or bar - this unit reads psi) and the thread: PT is the standard, with G and NPT as order options. The low-pressure regulator type is chosen where the circuit works below standard regulator settings; the exact adjustment range for the low-pressure type is not published, so confirm it with us before ordering. Flow is published as curves, not a single rating - ask us to confirm sizing against your application before you order.
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 number, so we do not quote a figure here. Tell us your line pressure and the flow your application needs and we will confirm the correct size from the datasheet on request.
The L in the code marks the low-pressure regulator type, intended for circuits that work below standard regulator settings. The exact adjustment range for the low-pressure type is not published in the catalogue sheet we work from, so confirm the range with us on request before ordering. The unit also carries a reverse/check valve (code K), a square psi gauge, a 40 um element, a differential-pressure drain and a PT1/2 port on the PT thread standard.
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.