The AirTAC GFR300C15LJC3T 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.
GFR300C15LJC3T is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is built with 1/2 in NPT ports, the low-pressure regulator type (its exact adjustment range is not published, so we confirm it on request), a differential-pressure drain, a 40 um filter element, and a round pressure gauge reading in bar. No mounting bracket is fitted (code J) and no reverse/check valve is included.
This is a genuine AirTAC part. The GFR300 series spans sizes 200 to 600 with port options from 1/8 to 1 in, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration (code W), gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C15LJC3T 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) |
Filtered, regulated air to clamp cylinders that must hold at a lower set pressure than the main header; the 40 um element keeps directional valves free of water and debris.
Water and particle removal ahead of spray guns, with the regulator set to the gun's working pressure; the round bar gauge gives a direct readout at the booth.
Steady regulated supply to diverter cylinders and air jets, with the differential-pressure drain keeping condensate out of the valve bank on the line.
Size 300 with 1/2 in NPT ports suits lines plumbed at that size; step up or down a size if your demand differs, and we will check the published flow curves against your application before you order. The differential-pressure drain bleeds the bowl automatically as air passes, with automatic (A) and manual (M) drains available as code options. The 40 um element is standard; specify W for 5 um if finer filtration is needed. The round gauge in this code reads in bar; the embedded square gauge and MPa or psi scales are alternatives. The thread here is NPT; PT is the standard thread and G (BSPP) is also orderable. This unit is supplied without a mounting bracket and without a reverse/check valve. As a low-pressure type, its exact adjustment range is not published - confirm it with us.
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 GFR300 series as curves, not as a single rated figure, so no honest single number exists. Send us your line size, operating pressure and air demand, and we will confirm the flow from the datasheet before you order.
C3 specifies the round external gauge with a bar scale; the embedded square gauge with MPa or psi scales is the alternative. L marks the low-pressure regulator type, whose exact adjustment range is not published in the catalogue, so we confirm it on request. The trailing T is the NPT thread option.
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.