The AirTAC GFR300C15ALJC1TK 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 GFR300C15ALJC1TK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is a size 300 unit with a 1/2 in NPT port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, and the low-pressure regulator type with a round pressure gauge reading in MPa. A reverse (check) valve is fitted, and the unit is ordered without a mounting bracket.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, a choice of 40 um or 5 um filtration, and differential-pressure, automatic or manual drains. Rated flow is published as curves rather than a single figure, so ask us to confirm flow and datasheet details for your application.
| Model | GFR300C15ALJC1TK 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 carton-sealing and wrapping machines on a packaging line, where the automatic drain handles condensate at an unattended drop and the low-pressure regulator holds a gentle working pressure for the actuators.
Conditioning air ahead of paint spray equipment, filtering water and particles that would spoil the finish and regulating at the lower pressures spray work calls for.
Supplying sortation and conveyor control cylinders that run at reduced pressure, with the check valve helping hold the set downstream pressure and the 40 um element protecting the valves.
Start with the port step: this unit is size 300 with a 1/2 in NPT port; step up to size 400 or 600 or down to 200 if your line size or air demand differs. Choose the drain to match attendance on site: automatic drain (this unit) suits points that are not checked daily, manual drain suits attended stations, and differential-pressure drain is the catalogue default. Filtration is 40 um standard; specify the W code for 5 um where finer pre-filtration is needed. This is the low-pressure regulator type, so confirm its set range against your working pressure before ordering. The gauge here is the external round type with an MPa scale; square embedded gauges and psi or bar scales are the other catalogue choices. Thread is NPT on this unit; PT is standard and G is also available. A bracket can be added if this unit was ordered without one.
Because rated flow is published only as curves and not as a single rating, send us your application details 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 flow for this series as curves, not as a single rated figure, so we do not quote a number. Send us your line size and air demand and we will confirm the flow from the datasheet for this exact 1/2 in NPT, size 300 configuration before you order.
The C code in the model fits the external round pressure gauge with an MPa scale; the embedded square gauge is the standard alternative, with psi or bar scales available. The L code makes this the low-pressure regulator type rather than the standard one, and its exact set range is not published in the catalogue, so confirm it with us against your working 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.