The AirTAC GFR300C10LJF2WGK AirTAC Filter Regulator G3/8, 5 um 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 GFR300C10LJF2WGK is a GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single 300-size body with a G3/8 (3/8 in) port. This configuration carries the 5 um filter element (code W) for finer air cleaning than the standard 40 um grade, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises, and a low-pressure regulator type for circuits that run below standard line pressures. An embedded square gauge reading in psi is fitted, and the code K reverse/check valve holds downstream pressure if the upstream supply is interrupted. No mounting bracket is included with this variant.
This is a genuine AirTAC part from the GFR300 filter-regulator line, which spans the 200/300/400/600 sizes with PT, G and NPT thread options, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and MPa, psi or bar gauge scales. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C10LJF2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Mounted ahead of directional valves on a clamping or press station, this unit filters machining moisture and fine particles out of the supply and holds a steady low-pressure setting for the actuators, with the check valve keeping the clamp circuit charged through brief supply dips.
On a robotic welding cell fed from a shared plant-air ring main, the 5 um element protects solenoid valves and weld-gun cylinders from fine contamination, while the regulator sets the lower working pressure the cell's gun-close circuit needs.
Feeding pneumatic test benches and instrument panels in a lab, the fine 5 um grade and low-pressure regulation suit sensitive fixtures, the psi square gauge gives direct imperial readout at the bench, and the differential-pressure drain keeps condensate off the instruments.
Choose the 300 size with its G3/8 port when your line sits between the smaller 1/4 in step and the larger 1/2 in step; match the size step to the flow your circuit needs, since each size step moves up in port and capacity. This unit is already specified with the 5 um element - pick it over the 40 um standard grade when downstream valves, cylinders or instruments are sensitive to finer contamination. The differential-pressure drain suits lines that run often enough for pressure pulses to clear the bowl; a manual-drain variant is the choice for intermittently used drops. The fitted square psi gauge gives direct readout in imperial units, and the K check valve is worth having on circuits where backflow or supply loss would be disruptive. Thread is G here; PT is the standard and NPT is an order option. Note this variant has no mounting bracket. Because flow is published as curves and not a single rating - and the low-pressure regulator range is not a published figure - send us your application details and we will confirm the datasheet and sizing 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 this series as curves rather than a single rated figure, so we do not quote one number. Tell us your working pressure and the flow your circuit needs, and we will confirm the datasheet curve and check the 300-size G3/8 unit against your application before you order.
The W in the code specifies the 5 um filter element, one grade finer than the 40 um standard, for circuits with contamination-sensitive valves or instruments. The L specifies the low-pressure regulator type, for circuits running below standard line pressures; its exact setpoint range is not a published figure, so we confirm it from the datasheet on request. The K adds a reverse/check valve, and J means no mounting bracket is fitted.
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.