The AirTAC GFR300C15ALC3WTK AirTAC Filter Regulator NPT1/2, 5 um 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 GFR300C15ALC3WTK is a 300-size filter regulator: one body that first removes water and particulate from compressed air, then regulates downstream pressure. This configuration is built for finer air quality with a 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator type for circuits that run below standard regulating ranges. It is fitted with a round gauge reading in bar, a reverse/check valve (code K), and comes with a mounting bracket. The port is 1/2 in with NPT thread.
This is a genuine AirTAC part from the GFR filter-regulator family, available across 200/300/400/600 sizes with a choice of ports, drain types, 40 um or 5 um filtration, gauge styles and scales, and G/NPT thread options. Flow is published in the catalogue as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15ALC3WTK AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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 clean, regulated low-pressure air to carton-forming and sealing stations on a packaging line, where the 5 um element protects directional valves and the automatic drain keeps condensate out of the circuit.
Regulating supply pressure to clamping cylinders on a CNC fixture line, with the check valve helping hold the set downstream condition if upstream supply dips.
Conditioning shop air for a test bench or laboratory rig that needs fine filtration and a lower regulated pressure, with the bar-scale round gauge giving a clear local setpoint readout.
Choose the size and port step against the air demand of the circuit: this unit is 300 size with a 1/2 in NPT port; smaller or larger GFR sizes are available if your flow requirement differs. This configuration carries the 5 um element (choose 40 um standard where finer filtration is not needed), an automatic drain (manual and differential-pressure drains are the other catalogue choices), and the low-pressure regulator type - note that the exact adjustment range for the low-pressure type is not published in the sheet we work from, so confirm it with us. The fitted round gauge reads in bar; embedded square gauges and MPa/psi scales are alternatives. Thread here is NPT (PT is the standard thread; G and NPT are order options), and a reverse/check valve is fitted.
Because flow is published only as curves and not as a single rating, ask us to confirm sizing against your application before ordering - we will pull the datasheet figure for you.
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 number here. Tell us your application and required flow and we will confirm the correct figure from the datasheet on request before you order.
Both are decoded from the model code: A is the automatic drain, which ejects collected condensate without manual attention (manual and differential-pressure drains are the other catalogue options), and W is the 5 um filter grade, one step finer than the 40 um standard element. The unit is also the low-pressure regulator type with a fitted round bar gauge and a reverse/check valve.
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.