The AirTAC GFR300C08LF2W AirTAC Filter Regulator 1/4 in Low-Pressure 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 GFR300C08LF2W is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a PT1/4 (1/4 in) port, the low-pressure regulator type, a 5 um filter element (code W), a differential-pressure drain on the bowl, a fitted embedded square gauge reading in psi, and the mounting bracket included. No reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family is made in 200, 300, 400 and 600 sizes with port sizes from 1/8 in to 1 in and PT, G (BSPP) or NPT threads, with differential-pressure, automatic or manual drains, 40 um standard or 5 um elements, and a choice of gauge scales (MPa, psi or bar). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure for your application.
| Model | GFR300C08LF2W AirTAC Filter Regulator 1/4 in Low-Pressure |
|---|---|
| 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) |
Supplying a small bench press whose cylinders are set to run at a reduced pressure, with the 5 um element keeping fine particulate out of the cylinder seals and valve seats.
Conditioning the air feed to gripper and pusher cylinders along a packaging conveyor, where the regulator holds a gentle set pressure and the differential drain carries off collected condensate.
Feeding instruments and small actuators in a lab setting that need clean, finely filtered air held at a low regulated pressure, with the psi gauge giving a familiar readout for technicians.
The real choices in this family are the size and port step (200/300/400/600, 1/8 in to 1 in) against the flow your line needs; the drain type (differential-pressure as on this unit, automatic, or manual); the filter grade (40 um standard, 5 um as fitted here for finer protection of downstream components); the gauge and its scale (psi here, with MPa and bar available); the thread (PT is the standard, G and NPT are order options); and whether a bracket is included. Note that this is the low-pressure regulator type; its exact adjustment range is not published in the material we hold, so please confirm it with us. Flow is published as curves, not a single rating - ask us to check the curve 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.
Flow for the GFR300 series is published as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow curve and correct sizing from the AirTAC datasheet on request.
The L in the code marks the low-pressure regulator type, intended for sets where the downstream pressure is held well below the standard range. The exact adjustment range for this variant is not published in the material we hold, so please confirm it with us before ordering. The maximum inlet pressure remains 1.0 MPa (145 psi) and the temperature range is -5 to 70 C.
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.