The AirTAC GFR300C08LF1T AirTAC Filter Regulator NPT1/4 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 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 GFR300C08LF1T is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration has 1/4 in NPT ports, the standard 40 um filtration element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough - no daily manual draining on lightly loaded lines. The L in the code marks the low-pressure regulator type, intended for circuits that hold lower set points than a standard unit. A square pressure gauge scaled in MPa is fitted so the set point can be read directly, a mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the series you can order the 5 um finer element (code W), automatic or manual drains, different gauge scales, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm the sizing and datasheet figures for your application before ordering.
| Model | GFR300C08LF1T AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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 machining or assembly fixture that holds workpieces with air clamps running at modest set points, the low-pressure regulator type holds the clamping pressure steadily while the 40 um element keeps water and swarf out of the clamp cylinders.
Feeding the actuator bank on a cartoning or wrapping conveyor, this filter regulator cleans the shop air and sets the working pressure for the seal and fold cylinders, with the differential-pressure drain handling condensate without operator attention.
On a robotic pick-and-place cell with vacuum ejectors and gripper cylinders, the unit filters incoming compressed air and regulates the supply at the lower settings the low-pressure type is intended for, with the fitted MPa gauge giving a direct set-point readout.
Start with the port step: size 300 carries 1/4 in ports here, and the G-series steps up through 3/8, 1/2, 3/4 and 1 in as the size number rises, so pick the size that matches your piping and air demand. Choose the drain to suit access: differential-pressure (this unit) drains itself under load, automatic (A) empties on a cycle, and manual (M) needs someone to open it. The standard element is 40 um; specify W for 5 um where finer pre-filtration matters. This unit is the low-pressure (L) regulator type - confirm its exact adjustment range with us, as it differs from the standard type. Gauge scales can be ordered in MPa, psi or bar, and threads can be G (BSPP) or NPT instead of the PT standard; a bracket is included as standard. Because flow is published as curves rather than one rated figure, 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 GFR300 series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Send us your line pressure, downstream demand and port size, and we will confirm the sizing against the datasheet curves on request before you order.
The L marks the low-pressure regulator type, intended for circuits that hold lower set points than the standard version; its exact adjustment range is not published in the standard table, so confirm it with us. The drain is the differential-pressure type: collected condensate is discharged automatically when the pressure differential across the 40 um element is sufficient, with no manual draining needed under normal load.
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.