The AirTAC GFR30010LJC2WT AirTAC Filter Regulator 3/8 in NPT, 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 PT3/8" 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 GFR30010LJC2WT is a 300-size filter regulator: it removes water and particulate from compressed air and then regulates downstream pressure, all in one body. This configuration is the low-pressure type, built for circuits that hold a lower regulated setpoint than a standard unit. It carries a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a round pressure gauge scaled in psi so the setpoint can be read and adjusted directly. The polycarbonate bowl suits the 300 size, the maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing. It is supplied without a mounting bracket and without a reverse/check valve.
This is a genuine AirTAC part from the G-series filter-regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G or NPT threads. Drain types, 40 um or 5 um elements, gauge styles and scales, brackets and check valves are all catalogue options across the range. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure against your application before ordering.
| Model | GFR30010LJC2WT AirTAC Filter Regulator 3/8 in NPT, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| T | NPT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Sealing jaws and film-tension cylinders on packaging lines often run at low regulated setpoints. This low-pressure filter regulator cleans the supply to 5 um and holds the reduced pressure the sealing circuit was set up for, with the psi gauge making the setting easy to check during changeover.
Workholding clamps on machining centres need clean air and a steady, moderate clamping pressure. Filtering to 5 um protects the clamp valves and cylinders from fine particulate and condensed water, while the regulator holds the clamp force the fixture was designed around.
Bench-scale test rigs and lab pneumatic circuits frequently need a lower, stable supply pressure and very clean air. The 5 um element and low-pressure regulation suit instrumented setups, and the differential-pressure drain keeps condensate off the circuit during continuous runs.
Start with the port: this unit is 3/8 in NPT, so match it to the line size your circuit already runs or step up a size if your flow demand sits near the top of a smaller port. Because published flow data is a set of curves rather than one rated number, send us your application conditions and we will confirm the right size before you order. The 5 um element in this unit is the finer grade; choose it when downstream valves, cylinders or instruments are sensitive to fine particulate, and stay with 40 um where coarser protection is enough. Drain is differential-pressure, which suits steady-flow duty; ask about automatic or manual drain variants if your flow pattern or access needs differ. The low-pressure regulator type is intended for circuits holding lower setpoints - its exact adjustment range is not published in the catalogue, so confirm it with us for your setpoint. The round gauge is scaled in psi; square embedded gauges and MPa or bar scales are alternatives in the range. Thread is NPT here, with PT and G available as order options, and a mounting bracket can be added if you need panel or wall fixing.
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 G-series as curves, not as a single rated figure, so there is no one rated flow number we can quote. Send us your inlet pressure, setpoint and expected air demand and we will confirm the correct size from the datasheet curves before you order.
The W code in the model sets the 5 um element, the finer of the two catalogue grades (40 um is standard), which suits sensitive downstream components. The blank drain position is the differential-pressure drain: it discharges collected condensate automatically as air flows through, with no manual intervention needed. Automatic (A) and manual (M) drain versions are available in the range if your duty or access suits them better.
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.