The AirTAC GFR30008LJC2WG AirTAC Filter Regulator G1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" 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 GFR30008LJC2WG is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This 300-size unit is fitted with G1/4 (BSPP) ports, the fine 5 um filter element (code W), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, a low-pressure regulator type, and an external round gauge scaled in psi. No mounting bracket is included with this configuration.
This is a genuine AirTAC part from the GFR300 family, one size within a range spanning sizes 200, 300, 400 and 600, with port options from 1/8" to 1", G or NPT threads in addition to the PT standard, manual or automatic drain variants, and gauge choices. Flow is published as curves rather than a single rated figure, so we confirm the exact datasheet figures for your application on request.
| Model | GFR30008LJC2WG AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — round, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 08 | Port size PT1/4". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds and regulates the air supply to clamp cylinders on a milling or drilling fixture, where the low-pressure regulator type holds a modest clamping force setting and the 5 um element protects the clamp valve seats from particulate.
Sits at the drop of a compact assembly robot's air line, filtering condensed water and fine particles before the robot's control valves while the psi gauge gives the operator a clear local setpoint reading.
Installed on the air drop feeding sealing and carton-forming cylinders on a packaging line, keeping the circuit pressure steady and the supplied air dry enough to prevent sticky valve spools.
Choose the GFR300 size step by matching the 1/4" port and the family's flow curve to your air demand - larger sizes (400, 600) carry larger ports and more flow. This unit is already specified with the 5 um fine-filtration element; the standard element is 40 um if your line does not need the finer grade. The low-pressure regulator type suits circuits set below the standard regulator's range; its exact adjustment range is not published, so confirm it with us against your setpoint. The round psi gauge is fitted here; embedded square gauges and MPa or bar scales are the other catalogue options. Thread is G (BSPP); PT is the catalogue standard and NPT is also available to order. No bracket is included with this code, so plan your mounting panel or bracket separately. Because flow is published as curves, not a single rating, ask us to confirm sizing 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 this series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet curves on request before you order.
The W code in GFR30008LJC2WG selects the 5 um fine-filtration element instead of the standard 40 um, for downstream equipment that needs cleaner air. The drain is the differential-pressure type, the default: it discharges collected condensate automatically when the pressure drop across the loaded element rises, with no manual draining in normal operation.
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.