The AirTAC GFR30010ALC1WT AirTAC Low-Pressure Filter Regulator NPT3/8 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 PT3/8" 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 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one unit does the job of a filter and a regulator. This configuration is the 300 size with a 3/8 in NPT port, a 5 um filter element (the W grade, finer than the standard 40 um), an automatic drain that clears condensate from the PC bowl without manual attention, and the low-pressure (L) regulator type. A round pressure gauge scaled in MPa is fitted, a mounting bracket is included, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes covering ports from 1/8 in to 1 in, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, square or round gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30010ALC1WT AirTAC Low-Pressure Filter Regulator NPT3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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 | Not fitted |
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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| (blank) | No reverse-flow valve (the default). |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeding a light-duty pneumatic press or clamping fixture that runs at reduced line pressure: the low-pressure regulator type suits circuits set well below standard plant pressure, while the 5 um element keeps water and debris out of the valve stack.
Conditioning supply air on a lab or QC test bench where instruments and pneumatic fixtures need clean, steady low-pressure air; the automatic drain handles condensate between runs without an operator opening the bowl.
Air preparation for conveyor-mounted packaging actuators and diverters on a humid line: the automatic drain keeps condensate out of the bowl during shifts, and the 5 um element protects cylinders and directional valves from particulate carryover.
Start with the port size: the 300 series steps up from the 200 series in both port (3/8 in here) and flow capacity, so match the size to the air demand of the circuit rather than only the existing pipe. Choose the drain to suit access: automatic (this unit) drains condensate on its own, manual needs an operator, and differential-pressure (the default) clears only when the element loads up. This unit carries the 5 um W element; the 40 um standard element suits general plant air, while 5 um protects finer downstream equipment. The L code marks the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us. The round gauge is scaled in MPa; psi and bar scales are orderable. Thread is NPT here; PT is the standard and G is also a catalogue option. A bracket is included. Because AirTAC publishes flow as curves, not a single rating, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
An automatic drain ejects condensate on its own, so it suits unattended or humid installations. A manual drain needs an operator to open it, and the differential-pressure drain (the default) only clears when the element loads up. This unit is ordered with the automatic drain, coded A.
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.