The AirTAC GFR30010LJC2WK AirTAC Filter Regulator PT3/8, 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 GFR30010LJC2WK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in one body with a single drain bowl. This configuration is the 300 size with a PT3/8 port, the low-pressure regulator type, a 5 um filter element (code W), a differential-pressure drain, a round gauge reading in psi, and a reverse/check valve fitted. No mounting bracket is included. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with ports from 1/8 to 1 inch, PT (standard), G or NPT threads, 40 um standard or 5 um filtration, differential-pressure, automatic or manual drains, and a choice of embedded square or external round gauges with MPa, psi or bar scales. Because flow is published as curves rather than a single rating, we confirm the datasheet figures for your application on request.
| Model | GFR30010LJC2WK AirTAC Filter Regulator PT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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 | Fitted (reverse flow permitted) |
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. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Feeds filtered, regulated air to the clamp and fixture cylinders around a CNC cell, where the low-pressure type suits a reduced-pressure circuit and the 5 um element helps protect the downstream valves.
Supplies the stopper and pusher cylinders on a packaging conveyor with water- and particulate-filtered air at a set pressure, with the round psi gauge giving the operator a local reading at the machine.
Conditions the air feeding spray guns in a finishing booth: the 5 um element limits particulate in the atomizing supply while the regulator holds the gun pressure steady, and the fitted reverse/check valve blocks backflow toward the supply.
Choose the size and port by the air your circuit needs: the 300 size here gives a PT3/8 connection, and larger sizes carry larger ports and more flow. This unit is the low-pressure type, so if your line runs at reduced pressures, confirm the exact adjustment range with us before ordering - it is not published as a single figure. The 5 um element (code W) suits finer particulate control; the 40 um standard element is the usual choice for general supply air. Drain is differential-pressure here; automatic (A) and manual (M) versions exist. The round gauge reads in psi; embedded square gauges and MPa or bar scales are options. Thread is PT as standard, with G and NPT available as order options, and a bracket can be specified if this no-bracket version needs mounting. Flow is published as curves, not a single rating, so 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so there is no one number we can quote. Send us your application details and we will confirm the flow figures from the datasheet for this exact 300-size, PT3/8 configuration before you order.
L marks the low-pressure regulator type: this unit regulates at reduced pressures rather than the standard range, and the exact adjustment range for the low-pressure type is not published as a single figure - we confirm it from the datasheet on request. The rest of the code decodes as: 300 size, PT3/8 port, J = no bracket, C2 = round gauge with psi scale, W = 5 um element, K = reverse/check valve 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.