The AirTAC GFR300C08ALC2K AirTAC Filter Regulator 1/4 in PT 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 See datasheet 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 AirTAC GFR300C08ALC2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one 1/4 in PT unit does both jobs in the air-preparation position. This configuration is the 300 size with a 1/4 in PT port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, the low-pressure regulator type, a round external gauge reading in psi, a built-in reverse/check valve, 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 bowl on this 300 size is polycarbonate (PC); only the 600 size uses aluminium alloy.
This is a genuine AirTAC part. The GFR series is available in 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, and with manual, automatic or differential-pressure drains, 40 um or 5 um (W) elements, standard or low-pressure regulation, embedded square or external round gauges in MPa, psi or bar scales, 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 on request.
| Model | GFR300C08ALC2K AirTAC Filter Regulator 1/4 in PT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C0 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Mounted at the drop to a small pneumatic press, it filters condensed water and pipe scale from the shop air line and holds a steady reduced pressure to the press cylinder, with the automatic drain keeping the bowl clear between shifts.
On a cartoning or wrapping line, the unit conditions the 1/4 in branch feeding seal jaws and reject cylinders: the 40 um element protects the valves, the low-pressure regulator matches the delicate-jaw circuit, and the psi gauge gives operators a visible setpoint.
Installed ahead of a pick-and-place gripper manifold, it delivers clean regulated air at low pressure for gentle handling, while the reverse/check valve holds the downstream circuit if supply pressure dips.
Start with the port step: this unit is size 300 with a 1/4 in PT port; step up to 400 or 600 if the circuit needs larger ports, or down to 200 for compact lines. The automatic drain suits unattended installations; choose manual (M) where an operator drains the bowl, or differential-pressure (blank) as the default. The 40 um element is the standard grade; specify the W code for the 5 um element where finer filtration is needed. The low-pressure regulator type in this code is intended for circuits working at reduced pressures - its exact adjustment range is not published, so confirm it with us. The round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. PT is the standard thread; G (BSPP) and NPT are order options. A bracket is included with this code.
Because flow is published as curves rather than a single rated number, we cannot quote one figure here - send us your application details 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your inlet pressure and the flow your circuit needs, and we will confirm the sizing against the datasheet on request before you order.
In GFR300C08ALC2K: A is the automatic drain, L is the low-pressure regulator type, C is the external round gauge, 2 is the psi gauge scale, and K means a reverse/check valve is fitted. The 300 is the size, 08 is the 1/4 in PT port, and the filter grade is the standard 40 um element.
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.