The AirTAC GFR300C15LJC2WT AirTAC Filter Regulator NPT1/2 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 GFR300C15LJC2WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built around a 1/2 in NPT port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain on the bowl, and the low-pressure regulator type. A round gauge scaled in psi is fitted, the bowl is metal, and the unit is supplied without a mounting bracket.
It is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Rated flow for this series is published only as curves rather than a single figure, so ask us to confirm flow and datasheet details for your application.
| Model | GFR300C15LJC2WT AirTAC Filter Regulator NPT1/2 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) |
Feeding clamp cylinders on a CNC fixture where the air must be filtered and held at a lower regulated pressure; the low-pressure regulator type and fitted psi gauge let the setter dial in the clamp circuit and read it directly.
Conditioning shop air ahead of spray guns in a paint booth: the 5 um element strips water and particulate that would ruin finish quality, while the regulator holds a steady gun supply pressure and the drain carries collected condensate away.
A filter-regulator point for the cylinders and air jets along a packaging conveyor, with the 1/2 in NPT port matching the main drop leg and the round psi gauge giving operators a visible setpoint on the line.
Size and port set the flow path: this unit is size 300 with a 1/2 in NPT port. If your line needs more or less capacity, step up to size 400 or 600 or down to 200, matching the port code (06 to 25) to your piping. Filter grade is a real choice: 40 um is the standard element and 5 um (code W) is the finer option fitted here - choose 5 um where downstream valves and cylinders need cleaner air. Drain type is another decision: differential-pressure (fitted here), automatic, or manual.
Regulator options are the standard type or this low-pressure type (L); the exact adjustment range of the low-pressure type is not published, so confirm it with us before ordering. Gauges are the embedded square type or an external round gauge, scaled in MPa, psi or bar - this unit carries a round psi gauge. Thread is PT as standard with G and NPT as order options, and the mounting bracket can be included or omitted (omitted here). Because flow is published as curves rather than a single rating, 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 this series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures on request before you order.
The L code marks the low-pressure regulator type rather than the standard one. Its exact adjustment range is not published in the material we hold, so please confirm the range with us. Maximum inlet pressure is still 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
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.