The AirTAC GFR300C15ALJC3TK 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 AirTAC GFR300C15ALJC3TK is a filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the GFR300 size with a 1/2 in NPT port, a 40 um filter element, a metal drain bowl, and the automatic drain (code A), which discharges collected condensate without manual attention. The regulator is the low-pressure (L) type; the catalogue does not publish an exact regulating range for the low-pressure type, so confirm it with us. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. A round pressure gauge with bar scale is fitted, a reverse/check valve (code K) is fitted, and no mounting bracket is included (code J).
This is a genuine AirTAC part. The GFR family covers sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and units can be ordered with a different drain type, 40 um or 5 um filtration, square or round gauges in MPa, psi or bar scales, PT, G or NPT threads, and with or without a bracket. Flow for GFR units is published as curves rather than a single rated figure, so no flow number is quoted here; ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C15ALJC3TK 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) |
Feeding filtered, regulated air to the clamps and fixtures on a machining line where the low-pressure (L) regulator type is specified. The 40 um element and automatic drain keep water and particulate out of the clamping cylinders, and the bar-scale gauge gives a local pressure readout at the fixture.
Point-of-use conditioning for the cylinders and air actuators along a packaging conveyor: the GFR300 drops into a 1/2 in NPT line, the automatic drain handles condensate without daily attention, and the fitted reverse/check valve covers circuits where backflow toward the supply must be prevented.
Conditioning the air feeding spray guns, air knives or blow-off nozzles on a finishing line, where water and particulate must be removed before the air reaches the tip and pressure is regulated down for the job at hand.
The real, decodable choices on this family are: size and port (200/300/400/600, 1/8 in to 1 in) stepped against the air demand of the circuit; drain type - differential-pressure (the default), automatic (this unit, code A) or manual (code M); filter grade - 40 um standard or 5 um (code W) for finer filtration; gauge - embedded square as standard or an external round gauge in MPa, psi or bar scales (this unit carries a round, bar-scale gauge); thread - PT as the catalogue standard with G and NPT as order options (this unit is NPT); bracket (standard on GFR, omitted with code J as here); and the low-pressure (L) regulator type fitted to this model.
Flow is published as curves, not as a single rated figure, so send us your flow and pressure requirements 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 GFR flow data as curves, not as a single rated figure, so no flow number is quoted here. Tell us your line pressure and the air demand of the circuit, and we will confirm from the datasheet whether this 1/2 in unit is correctly sized before you order.
Code A on this model specifies the automatic drain, which discharges collected condensate without anyone having to open the bowl - useful where the unit sits in an out-of-the-way part of the line. The family's other choices are the differential-pressure drain (the default) and manual drain (code M). Note that this unit also carries the low-pressure (L) regulator type, whose exact regulating range is not published in the catalogue, so confirm it with us if your circuit runs at reduced pressure.
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.