The AirTAC GFR30010MLJC3T AirTAC Filter Regulator NPT3/8 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 GFR30010MLJC3T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the 300 size with 3/8 in NPT ports, a manual drain bowl in polycarbonate, the standard 40 um filter element, and the low-pressure regulator type. It ships with a round pressure gauge reading in bar, and 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.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, a choice of manual, automatic or differential-pressure drains, a 5 um element option (code W), square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for this model is published as curves rather than a single rating, so ask us to confirm the datasheet figures against your application.
| Model | GFR30010MLJC3T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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, bar 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". |
| 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Filtering and regulating supply air to a fixture-clamping circuit on a press line, where the clamp cylinders need a steady reduced pressure below the main header level and the manual drain is opened during shift checks.
Conditioning air for sealing jaws, grippers and diverters on a packaging conveyor, keeping water and debris out of the valves while holding a reduced, stable working pressure for the low-pressure actuator circuit.
Feeding filtered, regulated air to low-pressure actuator banks on a textile or paper converting line, with the round bar gauge giving operators a local reading and the manual drain emptied at scheduled maintenance rounds.
Start with the size and port: the 300 series with 3/8 in NPT ports suits lines plumbed at that size, and larger sizes carry more flow - match the step to your demand rather than oversizing. The manual drain on this unit means an operator opens the bowl drain during checks; if nobody is at the machine regularly, consider the automatic or differential-pressure drain variants. The 40 um element is the standard grade; specify the W code for 5 um where finer particulate removal matters. The low-pressure regulator type is intended for reduced downstream pressures - confirm the exact adjustment range with us before ordering, as it is not published as a single figure. Gauge scale here is bar; MPa and psi scales are available. Thread is NPT on this code, with PT and G offered as order options, and a bracket can be added if the J (no bracket) build does not suit your panel. Flow is published as curves, not a single rating, so send us your application details and we will confirm 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 the GFR300 series as performance curves rather than a single rated figure, so we do not quote one number. Tell us your inlet pressure and the flow your application needs, and we will confirm the datasheet curve and check the sizing for you before you order.
The M in the code GFR30010MLJC3T means the polycarbonate bowl has a manual drain: condensate is emptied by hand at service intervals, which suits machines visited regularly. The same GFR300 size is also available with an automatic or a differential-pressure drain if you would rather not rely on manual checks - just ask for the alternative code.
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.