The AirTAC GFR300C10ALF1T 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 See datasheet 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 GFR300C10ALF1T is an AirTAC GFR-series filter regulator: water and particulate filtration and pressure regulation combined in a single body. This size 300 unit has a 3/8 in NPT port, a 40 um filter element, and an automatic drain that removes collected condensate without manual blow-down. It is the low-pressure type, and the embedded square gauge (MPa scale) gives a direct readout of the regulated outlet pressure. The bowl is metal, a mounting bracket is included, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing).
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, and options that include manual or differential-pressure drains, a 5 um element (code W), alternative gauge scales (psi or bar), G (BSPP) or NPT threads, and a reverse/check valve. AirTAC publishes flow as curves rather than a single rating, so ask us to confirm the flow and datasheet figures for your application on request.
| Model | GFR300C10ALF1T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Supply filtered, regulated air to the clamp cylinders on a machining fixture: the low-pressure regulator sets the working pressure the fixture needs, the 40 um element stops water and pipe scale reaching the valves, and the square gauge gives a direct readout at the drop.
Feed the air cylinders on a carton-sealing or wrapping conveyor with clean, regulated air. The automatic drain keeps condensate out of the supply at a point that is not drained every shift, and the metal bowl stands up to daily line duty.
Point-of-use preparation at an assembly bench: the 40 um element protects air tools and cylinders from water and particulate, the regulator sets the station working pressure, and the embedded MPa gauge makes the setting visible without extra instruments.
Pick the size and port against the air demand of the circuit: this unit is size 300 with a 3/8 in NPT port, one step in the 200/300/400/600 range that runs up to 1 in. Drain choices are differential-pressure (the default), automatic (as fitted here) or manual; the automatic drain suits drops that are not blown down every shift. The standard element is 40 um; a 5 um element is available with code W where downstream equipment needs finer filtration. The embedded square gauge reads in MPa, with psi or bar scales available to order. PT is the standard thread and G (BSPP) or NPT are catalogue options; this unit is specified with NPT. This is the low-pressure type, and its exact regulation range is not published in the material we hold, so confirm the range against your set pressure with us. Because AirTAC publishes flow as curves rather than a single rated figure, ask us to confirm sizing against your application before you order.
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 there is no one number we can quote. Send us your application details and we will confirm the flow and datasheet figures for this size 300, 3/8 in unit on request before you order.
The A in the code means the bowl discharges collected condensate automatically, with no daily manual blow-down. Differential-pressure (the family default) and manual drains are also catalogue options across the GFR range if your installation prefers them.
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.