The AirTAC GFR300C15AC3TK 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 GFR300C15AC3TK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration has a 1/2 in NPT port, a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, a round pressure gauge reading in bar, a reverse/check valve fitted, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjustment range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, optional 5 um (W) elements, manual or differential-pressure drains, square or round gauges with MPa, psi or bar scales, and G or NPT thread options. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C15AC3TK 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) |
Point-of-use conditioning for the pneumatic clamps and tool-change cylinders on a CNC machining centre: the 40 um element strips water and swarf-laden particulate before the regulated feed reaches the actuators.
Supplying clean, regulated air to the diverter gates and stopper cylinders on a bottling or carton packaging conveyor, where the automatic drain keeps condensate out of the valves between shifts.
A filtered and regulated drop at an assembly bench feeding air screwdrivers, clamps and small actuators, with the round bar gauge giving operators a local pressure reference.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/2 in NPT port, and the GFR family steps up through sizes 400 and 600 where larger flow is needed. Drain type is a real choice: this unit has an automatic drain (code A); manual (M) and differential-pressure (blank) versions are available, and the regulation range differs by drain type - automatic and differential-pressure units adjust 0.15-0.9 MPa (20-130 psi). Filter grade is 40 um standard, with 5 um (code W) where finer filtration is required. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit carries a round bar gauge. Thread is NPT here; PT is the standard and G (BSPP) is an order option. A bracket is included on this unit.
Flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against 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 the GFR series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your application details and we will confirm the flow and sizing directly from the datasheet before you order.
The A in GFR300C15AC3TK is the drain code: A means automatic, so collected condensate is expelled without anyone opening the drain. Manual drain is code M and differential-pressure drain is the default (blank) - note that the regulator adjustment range is 0.15-0.9 MPa (20-130 psi) on automatic and differential-pressure drain units. This unit also carries a 40 um standard element (5 um is the W option), a round bar gauge, a reverse/check valve, and a 1/2 in NPT port.
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.