The AirTAC GFR30015ALC1WTK AirTAC Filter Regulator NPT1/2 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 AirTAC GFR30015ALC1WTK is a size-300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is built with a 1/2 in NPT port, an automatic drain that expels collected condensate without manual attention, a fine 5 um filter element (code W), the low-pressure regulator type, and a round pressure gauge with an MPa scale. A reverse/check valve is fitted and a mounting bracket is included; the polycarbonate bowl suits standard shop-air duty in non-freezing conditions from -5 to 70 C.
This is a genuine AirTAC part in the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um fine filtration, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30015ALC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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 — round, MPa 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
A bench-mounted pneumatic press fed from a shop-air header uses this unit to remove water and fine particles from the supply and hold a steady low regulated pressure to the cylinder, with the automatic drain and MPa gauge keeping the station honest between shifts.
A carton sealer or case packer running tape heads and flap folders benefits from the 5 um element protecting its valves and cylinders, while the low-pressure regulator type and round MPa gauge let the line setter set and read the working pressure at a glance.
A process skid with pneumatic control valves and positioners uses this filter regulator to deliver clean, moisture-drained air at a stable low pressure, with the fitted reverse/check valve holding the setting if the upstream supply dips.
Start with the port step: size 300 carries a 1/2 in port, and moving up or down a size changes both the port and the flow capacity, so match the step to the air demand of the circuit rather than to the pipe alone. Choose the drain next: automatic drain (this unit) suits unattended duty, manual drain suits supervised points, and the differential-pressure default drains only when the pressure drop warrants it. Pick the filter grade to match the downstream equipment: 40 um is the standard element, 5 um (this unit, code W) is the fine option for more sensitive tools and valves. Gauges come embedded square or as an external round gauge in MPa, psi or bar scales; thread is PT as standard with G and NPT as orderable options, and a bracket can be included or omitted.
Because AirTAC publishes flow only as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering. The exact regulation range of the low-pressure type is likewise confirmed from the datasheet 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 the GFR300 series as curves, not as a single rated number, so there is no one figure we can honestly quote. Tell us your application and supply pressure and we will confirm the relevant flow and datasheet figures for this exact model on request.
The A in the code selects the automatic drain, which ejects collected condensate without anyone opening the bowl, and the W selects the 5 um fine element instead of the 40 um standard one. Both are order-time choices on the GFR300 series, along with the drain type, gauge style and scale, thread (PT standard, G or NPT to order) and bracket.
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.