The AirTAC GFR300C08LJC3WT 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 GFR300C08LJC3WT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your set point in a single body. This size 300 unit is built with a 1/4 in NPT port, a 5 um filter element for finer filtration than the standard 40 um grade, a differential-pressure drain on the metal bowl, and the low-pressure regulator type. A round pressure gauge with a bar scale is fitted, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, PT as standard and G or NPT threads to order, plus choices of drain type, filter grade, gauge style and scale. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR300C08LJC3WT 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 packaging-line pick-and-place head, this unit filters the actuation air to 5 um and regulates it at a low set point, protecting the gripper valves and cylinders from water and debris.
Feeding an air-assisted spray gun in a finishing booth, the 5 um element keeps moisture and particles out of the finish while the low-pressure regulator holds a steady atomizing set point.
On a distribution conveyor with pneumatic pusher stations, the unit conditions the branch supply - filtered, drained and regulated - so the pusher cylinders cycle consistently through the shift.
Choices that matter on this family: step up or down a size (200/300/400/600) to match the port and the flow your line needs; pick the drain - differential-pressure as on this unit, automatic, or manual; choose the 40 um standard element or the finer 5 um grade fitted here; and select the gauge style and scale (MPa, psi or bar - this unit carries a round bar-scale gauge). Thread is PT as standard with G and NPT as order options, and a bracket can be added where the code calls for one.
Flow for the GFR series is published as curves, not a single rated figure, so 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 range as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and the air demand of your equipment and we will confirm the sizing from the datasheet on request.
The L in this code marks the low-pressure regulator variant, intended for circuits set below the standard range; the exact adjust range is not published in the material we hold, so confirm your set point with us. The fitted round gauge reads in bar, and square embedded gauges or MPa/psi scales are available as options. The differential-pressure drain in the bowl removes collected condensate as the pressure differential builds, with automatic and manual drain variants available as alternatives.
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.