The AirTAC GFR30010MLJC2K AirTAC Filter Regulator PT3/8 Low-Pressure 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 PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30010MLJC2K is an AirTAC GFR300 filter regulator that combines water and particulate filtration with pressure regulation in a single body. This configuration has PT3/8 (3/8 in) ports with PT thread as standard, a manual drain on the bowl, the standard 40 um filter element, and the low-pressure regulator type for circuits where downstream setpoints sit below the standard range. It ships from the factory with a reverse/check valve fitted, an external round pressure gauge reading in psi, and no mounting bracket.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, thread options (PT standard, G and NPT to order), drain types, filter grades and gauge styles. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR30010MLJC2K AirTAC Filter Regulator PT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| (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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a fixture that clamps workpieces with air cylinders, this unit filters incoming compressed air and holds a low regulated supply pressure to the clamp valves, with the check valve holding the circuit if upstream supply dips.
Air tables, tensioning devices and similar low-pressure pneumatic circuits need filtration plus a regulator set well below standard line pressure; the low-pressure type and manual drain suit a line drained on a fixed schedule.
At a packaging machine drop where actuators need clean, regulated air at moderate flow, the PT3/8 ports and 40 um element condition the supply, and the psi gauge lets operators read and set the station pressure directly.
Start with the size and port: GFR300 carries PT3/8 (3/8 in) ports, and the 200/300/400/600 size steps exist so you can match the unit to the flow your line needs - step up a size if your circuit sits near the top of a curve. This unit is the low-pressure type (L), so confirm the setpoint you need is within the low-pressure range before ordering. Drain is manual here (code M); automatic and differential-pressure drains are available if you cannot rely on scheduled bowl draining. The filter element is the standard 40 um; specify 5 um (code W) only if downstream equipment demands finer filtration. The gauge fitted is the external round type reading in psi; embedded square gauges and MPa or bar scales are alternatives. Thread is PT as standard, with G (BSPP) and NPT as order options, and the J code means no bracket is included - order one separately if you panel-mount. Because flow is published as curves rather than a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote a rated flow number for this unit. Send us your application details - required flow, upstream pressure and setpoint - and we will confirm the datasheet curve and correct sizing on request before you order.
The M in the code means the bowl has a manual drain: someone opens it periodically to remove collected condensate, which suits lines visited on a maintenance round. If you cannot rely on scheduled draining, the same GFR300 body is available with an automatic or differential-pressure drain - ask us to quote the alternative configuration.
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.