The AirTAC GFR300C10MC2WTK AirTAC Filter Regulator NPT3/8 5um 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 GFR300C10MC2WTK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 5 um element (the fine grade, in place of the 40 um standard), then regulates downstream pressure with a standard-type regulator adjustable from 0.05 to 0.9 MPa (7-130 psi). This configuration carries a manual drain on the bowl, an external round gauge with a psi scale, and a reverse/check valve fitted to hold downstream pressure. The 3/8 in NPT port suits mid-size lines, and the maximum inlet pressure is 1.0 MPa (145 psi) with a working temperature range of -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of drain types, filter grades and gauge styles, and PT, G or NPT threads. A mounting bracket is included with this unit. We confirm flow and other datasheet figures on request, since AirTAC publishes flow as curves rather than a single rating.
| Model | GFR300C10MC2WTK AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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 air feeding a machining centre's tool-changer and clamping circuits: the 5 um element protects fine pilot valves from particulate and water, while the regulator holds a steady set pressure for consistent clamping force.
Conditioning the air that drives packaging-line conveyor stops, diverters and carton-closing cylinders, where the regulator keeps actuator speed repeatable and the manual drain suits a station checked at each shift.
Filtered, regulated air to lab analysers or purged enclosures, where the 5 um grade and a stable downstream setpoint protect sensitive pneumatic metering components, and the check valve holds the setpoint if supply pressure dips.
Size 300 with a 3/8 in port sits in the middle of the GFR range; step up to 400/600 or down to 200 depending on the flow your line needs and the piping you already run. The 5 um element (code W) is the right choice when downstream valves, cylinders or instruments need finer filtration than the 40 um standard; the manual drain means an operator opens the bowl drain during checks, so choose the automatic or differential-pressure drain code instead if the unit sits where nobody regularly walks past. The round psi gauge is an external option here - the embedded square gauge is the standard fitting, and MPa or bar scales can be ordered. This unit is NPT-threaded; PT and G (BSPP) versions are order options, and a bracket is included. 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 flow for the GFR300 as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Send us your required flow and pressure and we will confirm against the datasheet curves whether this 3/8 in unit is correctly sized before you order.
The M in the code selects the manual drain: collected condensate stays in the bowl until an operator opens the drain fitting. It is simple and reliable, but it needs someone to attend the unit periodically. If the installation is unattended, the automatic (A) or differential-pressure (blank) drain codes on the same GFR300 body remove that task.
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.