The AirTAC GFR300C15ALJC3T 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 GFR300C15ALJC3T is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body, removing water and particulate from compressed air while holding the downstream pressure steady. This size 300 unit has a 1/2 in NPT port, an automatic drain that clears collected condensate from the polycarbonate bowl without manual attention, a standard 40 um filter element, and the low-pressure regulator type. A round gauge scaled in bar is fitted so the setpoint can be read directly, the unit is supplied without a mounting bracket, and it carries no reverse/check valve. 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. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include manual or differential-pressure drains, a 5 um element (code W), square or round gauges scaled in MPa, psi or bar, a reverse/check valve, a mounting bracket, and G or NPT threads in place of the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C15ALJC3T 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) |
On a stamping or assembly press fed from a plant air main, this unit filters water and swarf out of the supply and holds a steady low setpoint to the clamping cylinders, so part holding does not drift as the main pressure wanders.
Along a parcel or bottling conveyor, diverter and stopper cylinders cycle constantly. This unit conditions the branch feed, its automatic drain keeps condensate out of the valves during shifts, and the bar gauge lets the line technician verify the setpoint at a glance.
For pipetting stations and sample-handling modules that specify a gentle, stable air supply, the low-pressure regulator type and 40 um element condition the branch feed, while the round bar gauge documents the setpoint for the lab's operating record.
The real choices on this series: step size (200/300/400/600) and port against the flow your line needs; drain type - automatic as fitted here, or manual, or differential-pressure; element grade, 40 um standard or 5 um with code W; gauge style and scale; and thread, PT standard with G and NPT as order options - this unit is NPT. The L in the code marks the low-pressure regulator type, selected when the working setpoint sits below the standard type's range; its exact adjustment range is not published, so confirm it with us before ordering.
Because flow is published as curves rather than a single rating, we do not quote a number here. Send us your inlet pressure and required downstream flow and we will confirm the datasheet curve and check this size 300, 1/2 in unit against your application.
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. Send us your inlet pressure and the downstream flow your application needs, and we will confirm the datasheet curve and check whether this size 300 unit is correctly sized before you order.
The L in the code marks the low-pressure regulator type, chosen for setpoints below the standard type's range; the exact adjustment range is not published, so confirm it with us. The round gauge fitted here is scaled in bar, and other variants offer an embedded square gauge with MPa, psi or bar scales.
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.