The AirTAC GFR300C15MC3WTK 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 GFR300C15MC3WTK is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This 300-size unit has 1/2 in NPT ports, a 5 um filter element (code W; 40 um is the standard grade), a manual drain on the bowl, a round pressure gauge with bar scale, and a reverse (check) valve fitted (code K). The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi) with manual drain; maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing. The bowl on the 300 size is polycarbonate (PC), and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with ports from 1/8 to 1 in and options across drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale (embedded square or external round; MPa, psi or bar), thread (PT standard; G and NPT are order options) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application.
| Model | GFR300C15MC3WTK 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 air preparation for a press or clamping cylinder circuit: the filter section strips water and particles ahead of the valve stack while the regulator holds the set working pressure, and the fitted reverse (check) valve stays in line downstream.
Filtered, regulated air for a CNC machining cell's solenoid valves and actuators. The 5 um element suits a line feeding sensitive valve seats, and the manual drain fits a station attended at shift start.
Air preparation for packaging machinery actuators, grippers and diverters: the round bar gauge gives operators a local setpoint readout, and the included bracket allows mounting on the machine frame.
Pick the size and port against the air demand of the circuit: this is the 300 size with 1/2 in NPT ports, and larger sizes in the family carry larger ports and more flow. Decide the drain: this unit is manual drain, which also gives the wider regulator adjustment range of 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions adjust 0.15-0.9 MPa (20-130 psi). Choose the element: 40 um is standard, 5 um (this unit, code W) where finer filtration is wanted. Gauge style and scale are selectable (embedded square or external round; MPa, psi or bar - this unit is a round gauge in bar), as are thread (PT standard, G or NPT to order) and bracket. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and full datasheet figures for the GFR300C15MC3WTK on request.
Code M specifies a manual drain: condensate is emptied by hand from the bowl. It also gives the wider regulator adjustment range of 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions adjust 0.15-0.9 MPa (20-130 psi). Automatic-drain versions of the same series are available.
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.