The AirTAC GFR30010LNT AirTAC Filter Regulator 3/8 in NPT, 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 differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30010LNT is a GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This unit is built on the 300 size with 3/8 in NPT ports, uses the standard 40 um filter element, and drains condensate by differential pressure, so the bowl bleeds automatically as air flows through - no manual drain routine. It is the low-pressure (L) regulator type, no gauge is fitted (code N), and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing); the 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, and options include automatic or manual drains, a 5 um (W) element, gauges with different scales, and PT, G or NPT threads. Because flow is published as curves rather than a single rating, we confirm the datasheet figures for your application on request.
| Model | GFR30010LNT AirTAC Filter Regulator 3/8 in NPT, Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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) |
Feeding pneumatic clamps and fixtures on a machining cell: the 40 um element strips water and particulate from shop air before it reaches the clamp valves, and the low-pressure regulator holds a gentle, consistent clamp setting.
Supplying atomizing air to spray guns in a paint or coating booth, where the low-pressure type suits reduced set pressures and the bowl catches water that would otherwise blemish the finish.
Running light-duty pick-and-place and pusher cylinders on a packaging conveyor, where the low-pressure regulator protects delicate motions and the differential-pressure drain keeps condensate out of the valves.
The decodable choices on this unit are the 300 size with 3/8 in NPT ports, the low-pressure regulator type, the standard 40 um element, and the differential-pressure drain. If your line needs finer filtration, the same body accepts the 5 um (W) element; if you prefer a set-and-forget bowl, the automatic-drain variant removes any manual attention, and the manual-drain option gives full control of when the bowl is emptied. Threads come as PT (standard), G or NPT, and gauges can be specified where a setpoint needs watching. 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, not a single rated number, so we do not quote a l/min or SCFM figure here. Send us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing from the datasheet on request.
The N in the code means no gauge is fitted; gauged variants are available in the same family if you want to watch the setpoint. The L marks the low-pressure regulator type, intended for circuits set below the standard range - the exact adjustment range for this type is not in the published table, so we confirm it on request.
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.