The AirTAC GFR300C15LJF3WTK AirTAC Filter Regulator NPT1/2 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 GFR300C15LJF3WTK is an AirTAC GFR300 filter regulator: a filter and a pressure regulator combined in one body, so a single size-300 unit both removes water and particulate from the compressed air and holds your set downstream pressure. This configuration is built around a 1/2 in NPT port, a differential-pressure drain, the optional 5 um filter element (instead of the standard 40 um grade), and a low-pressure type regulator - its exact adjustment range is not published in the catalogue we work from, so confirm it with us. An embedded square gauge with a bar scale is fitted, a reverse (check) valve is included, and the unit is supplied without a mounting bracket. The bowl on this unit is metal, the maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and each size can be ordered with a different drain type, filter grade, gauge scale, thread (PT is the standard, with G and NPT as orderable options), bracket and reverse valve. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and check this unit against your application before ordering.
| Model | GFR300C15LJF3WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Filtering and regulating the air feeding positioners and pilot-operated process valves on a plant line, where the 5 um element protects small internal passages and the low-pressure regulator type is specified for the circuit's set pressure.
Supplying cleaned, regulated air to the cylinders and grippers on a packaging line, with the square bar gauge giving operators a local pressure reading and the fitted reverse (check) valve as part of the circuit design.
Conditioning the supply on a laboratory or QC test bench where instruments need 5 um-filtered air at a controlled low set pressure, read locally on the bar-scale square gauge.
The real choices within GFR300 are the ones encoded in this model: port and thread (here 1/2 in NPT; PT is the AirTAC standard and G is also orderable), filter grade (40 um standard, 5 um with the W code, as fitted here), drain type (differential-pressure by default, with automatic and manual as alternatives), gauge scale (MPa, psi or bar - this unit reads bar), regulator type (standard or low-pressure; this is the low-pressure type), and whether a bracket is included (this one is not). Size up by the port step against the flow your line needs, and note that the low-pressure regulator's adjustment range is not published, so confirm it covers your set pressure. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing from the datasheet 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, not as a single rated figure, so we do not quote a number here. Tell us your inlet pressure, set pressure and the flow your application needs, and we will confirm from the datasheet whether this 1/2 in NPT size is right before you order.
W is the filter grade: this unit carries the optional 5 um element instead of the standard 40 um. K means a reverse (check) valve is fitted. The other decodable choices on this model are the 1/2 in NPT thread, the differential-pressure drain, the bar-scale square gauge, the low-pressure regulator type, and no mounting bracket.
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.