The AirTAC GFR300C08LC2W AirTAC Low-Pressure Filter Regulator 1/4 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 GFR300C08LC2W is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is threaded PT1/4 (1/4 in), is the low-pressure regulator type, and carries the 5 um element (the 40 um standard element is the alternative). Condensate collects in the metal bowl and leaves through the differential-pressure drain; an external round gauge reading in psi is fitted, and the mounting bracket is included. No reverse (check) valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT threads, and standard or low-pressure regulation. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Because flow is published as curves rather than a single rating, we confirm flow and other datasheet figures for your application on request.
| Model | GFR300C08LC2W AirTAC Low-Pressure Filter Regulator 1/4 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) |
On a paint or coating line, the unit filters shop air to 5 um and holds a low, stable setting for the spray guns, with the round psi gauge making the set point easy to read and check at the point of use.
Fitted at the air drop feeding a carton-sealing or wrapping machine, it cleans the supply and regulates it to the pressure the machine's cylinders and actuators were set up for, with the differential-pressure drain handling condensate.
On a lab or production test bench running low-pressure air tests, the low-pressure regulator type and psi readout let operators dial in and verify test settings, while the 5 um element protects sensitive instruments on the bench.
Choose the size by the port and flow step: 200, 300, 400 or 600, with ports 06 (1/8 in) through 25 (1 in); this unit is size 300 with a 1/4 in PT port. Decide the drain: differential-pressure (as here, draining as the pressure drop builds), automatic for unattended continuous draining, or manual where you want to drain on a schedule. Pick the element: 40 um standard or 5 um (code W) for finer protection. Gauge choices are the embedded square gauge or an external round gauge, in MPa, psi or bar scales - this configuration has the round psi gauge. Threads are PT as standard, with G (BSPP) and NPT as order options, and the bracket is included (code J deletes it). Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 rather than a single rated figure, so there is no one number we can quote. Tell us your inlet pressure, set pressure and required flow, and we will confirm the sizing from the datasheet on request.
The embedded square gauge is the GFR standard; the C2 code on this model specifies the optional external round gauge with a psi scale. Square-gauge versions and MPa or bar scales are available in the same series, and the setting range for the low-pressure regulator type is confirmed on request.
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.