The AirTAC GFR300C08LF2K AirTAC Filter Regulator 1/4in PT 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 AirTAC GFR300C08LF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is the 300 size with a 1/4 in PT port, built as the low-pressure type (code L); its adjustment range is not published as a standard figure, so we confirm it against your setpoint on request. It carries the standard 40 um filter element, a differential-pressure drain on the polycarbonate bowl, an embedded square gauge reading in psi, and a built-in reverse-flow (check) valve; a mounting bracket is included. 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 spans four sizes (200, 300, 400 and 600) with ports from 1/8 to 1 in, and options that include a 5 um element (code W), automatic or manual drains, alternative gauge scales (MPa, psi or bar), an external round gauge, and G or NPT threads in place of the standard PT. Flow for this series is published as curves rather than a single rated figure, so send us your application details and we will confirm sizing and datasheet figures before you order.
| Model | GFR300C08LF2K AirTAC Filter Regulator 1/4in PT 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) |
Feeding clamp cylinders on a CNC fixture plate, where the low-pressure type lets the circuit run at reduced settings and the 40 um element stops pipe scale from reaching the clamp valves.
Supplying small air cylinders on an electronics assembly cell, with the embedded square gauge reading in psi so technicians can check and reset line pressure in familiar units, and the built-in check valve fitted for circuits that see reverse flow.
Regulating air to diverter gates and blow-off nozzles on a packaging conveyor, where the differential-pressure drain clears collected water from the bowl without a manual twist at every shift change.
The real choices within GFR300 are the port step (1/4 in here; larger sizes move up to 3/8 in, 1/2 in and beyond) matched to the air your line needs; the drain (differential-pressure as fitted here, or automatic or manual); the filter element (40 um standard, 5 um with code W for finer protection); the gauge (embedded square as fitted, reading psi on this unit, with MPa or bar scales and an external round gauge available); the thread (PT standard, G or NPT to order); and the bracket (included here, deleted with code J). Because AirTAC publishes flow as curves rather than one rated number, ask us to check the GFR300 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.
AirTAC publishes flow for the GFR300 as curves rather than a single rated figure, so there is no one number we can honestly quote. Send us your inlet pressure, setpoint and expected air demand, and we will confirm the sizing from the datasheet before you order.
It means a reverse-flow (check) valve is fitted, so air can pass backwards past the regulation stage instead of being trapped downstream. The check valve is a catalogue option on GFR units; on this model it is fitted by code.
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.