The AirTAC GFR30008LC2K AirTAC Filter Regulator, Low-Pressure, PT1/4 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 PT1/4" 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 GFR30008LC2K is an AirTAC GFR300 series filter regulator: filtration and pressure regulation combined in a single body, sized for 1/4 in PT threaded ports. This configuration is the low-pressure type (code L), fitted with an external round gauge reading in psi (code C2), a reverse/check valve (code K), and the standard 40 um filter element with a differential-pressure drain on the polycarbonate bowl. It removes water and particulate from the compressed air and holds the downstream pressure at the set point, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). Because it is the low-pressure type, the exact adjustment range is not published in the material we hold - ask us to confirm it against your set point before ordering.
This is a genuine AirTAC part from the G-series air-treatment range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT, G (BSPP) or NPT threads, manual or automatic drain options, a 5 um (code W) filter grade, and gauge or check-valve variants. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow-curve figures for your application on request.
| Model | GFR30008LC2K AirTAC Filter Regulator, Low-Pressure, PT1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 — 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. |
|---|---|
| 08 | Port size PT1/4". 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). |
| 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. |
| (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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Machining cells that clamp delicate or finished parts need air regulated well below normal line pressure so the clamps hold without marking the workpiece. A low-pressure filter regulator at each clamp station cleans the supply and holds the reduced set point, with the check valve holding the clamp circuit if upstream pressure dips.
Carton erectors, labelers and case packers run banks of small cylinders and air actuators that are sensitive to dirt and pressure wander. A compact filter regulator at the machine's air drop removes condensate and particulate and keeps the actuator pressure steady, with the psi gauge giving operators a visible set point.
Test rigs and lab pneumatic circuits feeding gauges, sensors and small actuators need clean, gently regulated air rather than full shop pressure. A low-pressure filter regulator on the bench supply line filters the air, lets the technician dial in a low set point on the psi gauge, and the check valve prevents back-feed between bench circuits.
Size and port: the GFR300 carries 1/4 in ports in this configuration; if your line needs more or less flow capacity, step up or down through the 200/300/400/600 size ladder, which moves port size from 1/8 in up to 1 in. Drain: this unit uses the differential-pressure drain (the default); automatic (code A) or manual (code M) drains are orderable alternatives if you want unattended or operator-controlled draining. Filter grade: 40 um is standard here; specify code W for the 5 um element where finer particulate removal is needed. Gauge: this code carries an external round gauge on the psi scale; embedded square gauges and MPa or bar scales are the other catalogue options. Thread: PT is the standard; G (BSPP) and NPT are order options. The mounting bracket is included, and the reverse/check valve (K) is fitted on this unit.
One honest routing note: AirTAC publishes filter-regulator flow as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application's flow and pressure requirements and we will confirm sizing against the datasheet curves 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 filter-regulator capacity as flow curves rather than a single rated figure, so we do not quote a flow number for this unit. Send us your line pressure, set point and required air consumption, and we will confirm the sizing against the datasheet flow curves on request before you order.
On this GFR300 filter regulator, L is the low-pressure regulator type (its exact adjustment range is not published - confirm it with us), C2 is an external round gauge reading in psi, and K means a reverse/check valve is fitted. The drain is the standard differential-pressure type, the filter element is the standard 40 um grade, and the mounting bracket is included.
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.