The AirTAC GFR300C10ALJC1WTK AirTAC Filter Regulator NPT3/8 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 AirTAC GFR300C10ALJC1WTK is a filter regulator: water and particulate removal plus pressure regulation in a single 300-size body. This configuration is threaded NPT3/8 (3/8 in), carries the finer 5 um filter element (code W), drains condensate automatically, and is the low-pressure regulator type. It comes fitted with an external round gauge scaled in MPa and a reverse/check valve, and is supplied without a mounting bracket. The metal bowl collects the separated water and dirt. 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 from the GFR300 series. The GFR line is available in sizes 200, 300, 400 and 600 with a choice of port, thread (PT standard; G and NPT as ordering options), drain type, filter grade (40 um standard, 5 um optional), gauge style and scale, and bracket. Because flow is published as curves rather than a single rated figure, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10ALJC1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Fixture clamps and swing cylinders on a CNC cell that are specified to run at reduced pressure get filtration and regulation from one body in the 3/8 in air drop, with the 5 um element protecting the clamp valves.
Pick-and-place and carton-forming cylinders on a packaging conveyor take their air through this unit: water and dirt are drained off automatically and the working pressure is set and read locally on the MPa gauge.
A paint or coating line where the atomizing air is regulated to a low setpoint benefits from the low-pressure regulator type, with the finer 5 um grade keeping oil-free, dry-enough air reaching the gun.
Choose the GFR300 size step by matching the port - here 3/8 in NPT - against the air consumption of the downstream circuit; larger sizes carry larger ports and more flow. If your line sits below the standard pressure band, the low-pressure regulator type (code L) is the right pick; its exact adjustment range is not published, so ask us to confirm it against your setpoint. Drain choice matters: automatic (this unit) dumps condensate without attention, manual needs a periodic twist, and the differential-pressure default suits steadily loaded lines. Filtration is 5 um here (code W) versus the 40 um standard - pick 5 um where downstream valves or instruments are sensitive. The fitted round MPa gauge can alternatively be ordered square, with psi or bar scales, and PT or G threads are ordering alternatives to this NPT version.
One honest note before you order: AirTAC publishes flow only as curves, not a single rated number, so send us your application and we will confirm sizing against the datasheet before you commit.
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 series as curves rather than a single rated figure, so we do not quote a number. Tell us your application and downstream air consumption and we will confirm the sizing from the datasheet on request.
The A in the code selects the automatic drain, which expels collected condensate from the metal bowl without operator attention. The catalogue alternatives are manual drain (periodic operation) and the differential-pressure drain fitted by default; any of the three can be ordered on this family.
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.