The AirTAC AirTAC GFR300C10ALNTK Filter Regulator 3/8 in NPT 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 GFR300C10ALNTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is threaded NPT 3/8 in, is the low-pressure regulator type, and carries the standard 40 um filter element with an automatic drain that bleeds collected condensate from the polycarbonate bowl without manual attention. A reverse/check valve is fitted, a mounting bracket is included, and no gauge is supplied on this code.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, optional 5 um filtration (code W), manual or differential-pressure drain choices, gauge options, and G/NPT thread variants. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | AirTAC GFR300C10ALNTK Filter Regulator 3/8 in NPT |
|---|---|
| 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 case-erector cylinders on a packaging line: the 40 um element strips water and pipe scale before they reach the valves, the automatic drain handles condensate overnight, and the low-pressure regulator holds a gentle working pressure for delicate wrap-and-seal actuation.
Supplying the air cylinders that push, divert and stop product on conveyor lines: filtered, regulated air at low pressure keeps the diverters consistent through the shift, while the check valve holds the downstream circuit if upstream supply dips.
Regulating supply to low-pressure clamping fixtures on a CNC cell: the filter keeps swarf-laden, wet shop air out of the clamp cylinders, the automatic drain protects the bowl between cycles, and the 3/8 in NPT ports suit the cell's drop lines.
Decodable choices on this series: step the size (200/300/400/600) to match the port and the flow your line needs - this unit is size 300 with 3/8 in NPT ports. Drain options are the differential-pressure default, automatic (fitted here), or manual; filter grade is 40 um standard with 5 um (code W) available. Gauge and scale can be selected on regulator-equipped units - this code carries none - and PT is the standard thread with G and NPT as order options; a bracket is included. This is the low-pressure regulator type, and its exact regulation range is not published, so confirm it with us. Because flow is published as curves rather than one rated figure, send 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 l/min or SCFM number. Tell us your application and we will confirm the sizing against the datasheet flow curves on request before you order.
Yes. The N in GFR300C10ALNTK means no gauge is fitted on this unit. GFR regulator-equipped units can be ordered with an embedded square gauge or an external round gauge, with MPa, psi or bar scales - just ask and we will decode the right gauge option code for you.
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.