The AirTAC GFR300-10ALC1T 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 automatic 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 GFR300-10ALC1T is a size-300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, and a low-pressure regulator type with a round MPa gauge fitted so the set pressure is visible at a glance. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size (only the 600 size uses an aluminium alloy bowl), and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element option, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300-10ALC1T AirTAC Filter Regulator NPT3/8 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 | Automatic 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". |
| A | Drain: Automatic 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. |
| (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) |
Feeds filtered, low-pressure regulated air to workholding clamps on a machining centre, with the MPa gauge letting the setter verify clamp pressure and the automatic drain keeping condensate out of the circuit.
Conditions the air feeding cylinders and diverters on a packaging conveyor, removing water and particles ahead of the valves while the low-pressure regulator holds a gentle, repeatable actuation pressure.
Supplies clean, regulated air to bench-top lab equipment that operates at low pressure, where the 40 um element protects sensitive components and the round gauge documents the set supply pressure.
Size the unit by port and flow: the 300 size with a 3/8 in NPT port sits mid-range in the GFR family, one step above the 200 size and below the 400 and 600 sizes. Because flow is published as curves and not as a single rating, ask us to confirm sizing against your application before ordering. This unit is the low-pressure regulator type, chosen where the working pressure is below the standard type's range; the exact range is not published, so confirm it with us. The automatic drain suits unattended installations, while manual and differential-pressure drains are the alternatives. The 40 um element is standard; specify code W for 5 um if finer filtration is needed. The round MPa gauge is fitted here; square gauges and psi or bar scales are options. NPT is decoded from the code; PT and G threads are order options, and a bracket is included.
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 this family as curves rather than a single rated figure, so no rated flow number can be stated. Tell us your application and we will confirm the flow from the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without operator attention - useful for unattended or hard-to-reach installations. The alternatives in the GFR family are the manual drain and the differential-pressure drain (the default), and the regulator here is the low-pressure type with a round MPa gauge fitted.
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.