The AirTAC GFR300C08MF1WTK AirTAC Filter Regulator NPT1/4 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 GFR300C08MF1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This size-300 configuration has a 1/4 in NPT port, a 5 um filter element (finer than the standard 40 um grade), a manual drain for condensate release, an embedded square gauge scaled in MPa, and a reverse/check valve fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), the working temperature range is -5 to 70 C (non-freezing), a mounting bracket is included, and the bowl is metal.
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, filter grade, gauge style and scale, thread (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08MF1WTK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Filtering and regulating the supply to pneumatic clamps and tool-change cylinders on a machining centre: the 5 um element guards fine valves against particulate and water, while the square MPa gauge gives a local setpoint readout at the machine.
Carton-sealing and case-erecting cylinders on a packaging line need steady, clean air. This unit filters the incoming supply and holds the regulated pressure, with the manual drain suited to a supervised shift maintenance routine.
Feeding air impact drivers and nutrunners at a bench assembly cell: the regulator keeps tool supply pressure consistent between stations, and the fitted reverse/check valve protects the downstream circuit against backflow.
The real choices in this family are all decodable from the code. Step the size and port to match the pipe and the air demand: 200/300/400/600 with ports from 1/8 to 1 in. Choose the drain: manual (this unit), automatic, or the differential-pressure default. Choose the filter grade: 40 um standard or 5 um (code W) for finer protection, as fitted here. Choose the gauge: embedded square as on this model, external round optional, with MPa, psi or bar scales. Thread is PT as standard with G and NPT as order options, and a bracket is included unless code J says otherwise.
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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Send us your application details - port size, downstream demand and working pressure - and we will confirm the flow from the datasheet on request.
Code M specifies a manual drain: condensate collected in the metal bowl is released by hand during routine checks. Automatic and differential-pressure drains are catalogue options across the GFR family if you prefer unattended drainage.
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.