The AirTAC GFR30010MLJF1T AirTAC Filter Regulator, NPT 3/8 in 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 GFR30010MLJF1T is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/8 in NPT port, the low-pressure regulator type, a manual drain on the bowl, a 40 um standard filter element and an embedded square gauge scaled in MPa. No mounting bracket is fitted and no reverse/check valve is included.
This is a genuine AirTAC part. The GFR range is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include automatic, manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures against your application - we confirm datasheet details on request.
| Model | GFR30010MLJF1T AirTAC Filter Regulator, NPT 3/8 in |
|---|---|
| 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 — square, 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). |
| F | Gauge shape: Square. 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) |
Installed ahead of a pneumatic press or clamping station, this unit filters compressor water and particulate out of the supply and holds a steady, reduced working pressure to the cylinder valves, with the square gauge giving a direct MPa reading of the set pressure.
On a packaging or bottling line, the low-pressure regulator type suits circuits running at reduced set pressures, feeding sorters, diverters and stopper cylinders with clean, regulated air while the manual drain bowl is emptied during scheduled line checks.
Mounted at the air inlet of a CNC machine tool or automated cell, this filter regulator protects directional valves and logic components from condensate and debris and provides a stable regulated supply, with the 3/8 in NPT port matching standard machine drops.
Start with the port step: this unit is size 300 with a 3/8 in NPT port; larger sizes carry larger ports and more flow, so match the size to the air demand of the circuit. Choose the drain type for the bowl: manual (as here) needs periodic draining by hand, while automatic and differential-pressure drains discharge condensate without operator action. The 40 um element is standard; specify the 5 um W option where finer filtration is needed. Gauge scale (MPa, psi or bar), thread family (PT standard, G or NPT to order) and the bracket option are all decodable choices. Because flow is published as curves rather than a single rated figure, 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, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Send us your application details and we will confirm the flow and sizing figures from the datasheet on request.
The M in the code specifies a manual drain: condensate collected in the polycarbonate bowl is released by hand at service intervals. Automatic and differential-pressure drain options are available in the same size if you prefer unattended condensate discharge; this particular model is supplied with the manual drain.
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.