The AirTAC GFR30015ALC2TK AirTAC Filter Regulator NPT1/2 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 GFR30015ALC2TK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in NPT port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, and a round pressure gauge reading in psi. It is a low-pressure (L) type unit, and a reverse/check valve is fitted, so it suits circuits where the regulated pressure must sit well below standard line settings and where backflow protection matters.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in and PT, G or NPT threads. Filter grade, drain type, gauge style and scale are all selectable across the range. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30015ALC2TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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 — round, 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). |
| C | Gauge shape: Round. 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. |
| T | NPT 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) |
Pneumatic clamp and hold-down circuits that must run at reduced pressure to protect delicate workpieces use this filter regulator to clean the supply and hold a low, stable setting, with the check valve guarding against backflow.
Carton sealers, wrap stations and form-fill-seal lines draw instrument-grade air through this unit: the 40 um element strips water and particles ahead of valves and cylinders, and the automatic drain keeps the bowl clear through long shifts.
Test rigs and pilot-scale process benches needing air at low, precisely watched pressures use the low-pressure regulator with the psi round gauge for direct reading, while filtration protects sensitive instrumentation downstream.
Step up or down through the GFR sizes (200/300/400/600) to match the port and the flow your line needs; this 300 unit takes a 1/2 in port in NPT thread, with PT and G available to order. Drain choice matters in practice: automatic drain suits unattended duty, manual suits supervised stations, and the differential-pressure default suits standard setups. The 40 um element is the standard grade; specify W for the 5 um option where finer filtration is required. Gauge scale (MPa, psi or bar) and bracket options can be matched to the installation.
Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering. The exact regulation range of the low-pressure (L) type is also confirmed on request.
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 number. Send us your line pressure, downstream demand and port size, and we will confirm the flow and sizing figures from the datasheet on request.
This configuration has an automatic drain, which expels collected condensate from the bowl on its own, so it suits installations that run unattended or where manual draining is easily forgotten. Manual and differential-pressure drain versions are available in the same series if your maintenance routine prefers them.
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.