The AirTAC GFR30010MLJC1T 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 AirTAC GFR300 series is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at a set point. This unit is the 300 size with a 3/8 in NPT port, built as the low-pressure regulator type, with a manual drain bowl in PC (polycarbonate), the 40 um standard filter element, and a round pressure gauge scaled in MPa. No mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The G-series filter regulator range spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, drain choices (manual, automatic or differential-pressure), an optional 5 um element, gauge scales in MPa, psi or bar, and G (BSPP) or NPT thread options. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing on request.
| Model | GFR30010MLJC1T 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, MPa 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. |
| 1 | Gauge scale: MPa. 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) |
Filter and regulate the air feeding cylinders on a bench or stamping press, so the tooling sees clean air held at the set pressure the die and clamps were set up for.
Supply clean, regulated air to actuated ball and butterfly valves on a process skid, keeping actuator supply steady through the shift and draining accumulated condensate manually at checks.
Condition the air feeding diverters, stoppers and blow-offs on a packaging conveyor, protecting downstream valves and cylinders from water and debris while holding a stable line pressure.
Step the size (200/300/400/600) and port against the air demand of your circuit; this 300 unit carries a 3/8 in NPT port and is the low-pressure regulator type. Drain: this model has a manual drain, which you open periodically to clear condensate; automatic or differential-pressure drains suit unattended installations. Filtration is the 40 um standard element, with a 5 um (code W) element available where finer filtration is needed. Gauge: this unit carries a round gauge scaled in MPa; the embedded square gauge and psi or bar scales are options. Thread: PT is the standard, with G (BSPP) and NPT as order options - this model is NPT. A mounting bracket is optional; this model has none. 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. 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 as curves rather than a single rated figure, so no rated flow number is quoted here. Tell us your application and we will confirm the flow curve and datasheet figures on request before you order.
This model's bowl has a manual drain: condensate is released by opening the drain during routine checks, which suits installations that are attended regularly. Automatic or differential-pressure drains are available in the same series for unattended duty. The bowl is PC (polycarbonate) at this size, and the operating range is -5 to 70 C (non-freezing).
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.