The AirTAC GFR300C15LJC1T 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 AirTAC GFR300C15LJC1T is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration carries a 1/2 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential rises, and a low-pressure regulator type for circuits that run below standard regulating ranges. A round pressure gauge scaled in MPa is fitted, and the unit has a metal bowl with no mounting bracket.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um filtration (code W), automatic or manual drains, gauge scale choices, G/NPT thread options and bracket variants. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C15LJC1T 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) |
Filtering and regulating the air feeding grip and pusher cylinders on a bottling line, with the low-pressure type holding a gentle set pressure for delicate container handling.
Conditioning shop air upstream of pneumatic clamps and tool-change actuators on a machining centre, removing water and pipe scale at the 40 um grade before regulation.
Supplying clean, regulated low-pressure air to instruments and test rigs on a lab bench, with the round MPa gauge giving a clear local pressure readout.
Size 300 with a 1/2 in NPT port sits in the middle of the GFR range; step up to size 400 or 600 or down to 200 depending on the flow your line needs - we will check the published flow curves with you. Drain choice is real: differential-pressure (this unit, self-bleeding), automatic (A) or manual (M). Filtration is 40 um here; specify W for 5 um where finer protection is needed. Gauge scale can be MPa, psi (2) or bar (3), and the thread can be ordered as PT (standard) or G (BSPP) instead of this NPT version. A bracket can be added if panel or wall fixing is required. Note this is the low-pressure regulator type; its exact adjustment range is not published in the standard table, so confirm it with us from the datasheet.
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 l/min or SCFM number. Send us your inlet pressure, set pressure and required flow and we will confirm from the datasheet curves whether this size 300, 1/2 in unit is correctly sized.
Blank drain code means the differential-pressure type: condensate in the metal bowl is bled off automatically whenever the pressure differential across the filter rises, with no operator action. If you prefer a float-type automatic drain, specify code A; for a hand-operated drain, specify M.
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.