The AirTAC GFR30010MLC3T 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 GFR30010MLC3T is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size-300 unit is specified with a 3/8 in NPT port, a 40 um standard filter element, a manual drain bowl in polycarbonate, and the low-pressure regulator type. A round external gauge scaled in bar is fitted, a mounting bracket is included, and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options, a 5 um (code W) element upgrade, automatic or differential-pressure drain alternatives, gauge scale choices in MPa, psi or bar, and a reverse/check valve option. Flow is published as curves rather than a single rated figure, so we confirm the datasheet figures for your application on request.
| Model | GFR30010MLC3T 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. |
| (blank) | Mounting bracket included. |
| (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) |
Clean, regulated low-pressure air to small benchtop press cylinders, with the bar gauge giving operators a visible set point and the manual drain emptied during shift checks.
Filtered and regulated air for diverter and stopper cylinders on a carton conveyor, where the low-pressure type suits gentle-actuation circuits and the 40 um element protects valves.
Point-of-use conditioning for lab automation modules and sample-handling actuators, with the polycarbonate bowl drained manually at the start of each run.
Size 300 with a 3/8 in port sits mid-range in the GFR series; step up to 400 or 600, or down to 200, according to the air demand of the circuit. The 40 um element is the standard grade; choose the 5 um W option where finer particulate removal is needed. This unit has a manual drain, so the bowl must be drained by hand - if you prefer automatic or differential-pressure draining, those variants exist in the same family. The low-pressure regulator type is intended for circuits set below the standard range; its exact adjustment range is not published, so confirm it with us against your set point. The fitted round gauge reads in bar; MPa and psi scales are alternatives. NPT is the thread on this code; G (BSPP) and PT are order options, and a mounting bracket is included.
Because flow is published as curves and not as a single rated number, 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 GFR series as curves rather than a single rated figure, so no single number can be quoted here. Tell us your application and we will confirm the relevant flow and datasheet figures for this exact model on request.
The M in the code specifies a manual drain bowl, which you empty by hand - a good fit where the unit is accessible and checked routinely. The same GFR300 family is available with automatic or differential-pressure draining if you would rather not rely on manual draining; 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.