The AirTAC GFR300C15ALC1TK 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 GFR300C15ALC1TK is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This size 300 configuration is built with a 1/2 in NPT port, an automatic drain that handles collected condensate without a manual drain routine, a 40 um filter element, and the low-pressure regulator type for circuits that run below standard line pressure. It comes fitted with a round pressure gauge scaled in MPa, a built-in check valve (code K), a metal bowl, and a mounting bracket. 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 family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and is available with manual or differential-pressure drains, a finer 5 um element (code W), embedded square or external round gauges in MPa, psi or bar scales, G or NPT thread options, and bracket variations. Flow data for the series are published as curves rather than a single rating, and the adjustment range of the low-pressure type is not listed as a single figure either; ask us and we will confirm both from the AirTAC datasheet against your application before you order.
| Model | GFR300C15ALC1TK 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) |
Supplying filtered, regulated air to pneumatic clamps on a machining fixture, where the clamping circuit is held at a reduced setting below the main line pressure and the regulator is the low-pressure type.
Running the air cylinders that push, divert and guide cartons on a packaging conveyor, with water and pipe scale removed ahead of the directional valves and actuator seals.
A point-of-use drop on an assembly line where operators need clean air at a stable, reduced setting for actuated fixtures and small pneumatic tooling at the bench.
Choose the size and port by the air your circuit actually uses: this unit is size 300 with a 1/2 in NPT port, and the GFR range steps through sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in. Because AirTAC publishes flow only as curves and not as a single rated number, send us your operating pressure and demand and we will confirm the right size from the datasheet before you order. The other decodable choices are the drain (automatic here; manual and differential-pressure versions exist), the filter grade (40 um standard, 5 um with code W), the gauge (square embedded or round external, in MPa, psi or bar scales), the thread (PT is the catalogue standard, with G and NPT as order options - this unit is NPT), and the bracket (included here; code J deletes it). Note that this is the low-pressure regulator type; its adjustment range is not published as a single figure, so confirm it with us for your set pressure.
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-series flow as curves in the datasheet rather than as a single rated figure, so there is no one number we can honestly quote. Send us your operating pressure and expected air demand, and we will confirm from the datasheet whether this size 300 unit with the 1/2 in NPT port suits your application before you order.
The A in GFR300C15ALC1TK is the automatic drain: the bowl discharges collected condensate on its own, so no one has to open a drain valve each shift. Manual-drain and differential-pressure-drain versions of the same GFR300 unit are catalogue options if your maintenance routine prefers a different arrangement.
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.