The AirTAC GFR300C08MC2W AirTAC Filter Regulator PT1/4, 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 GFR300C08MC2W is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air through a 5 um element (the fine grade, code W, versus the 40 um standard) and holds a regulated downstream pressure adjustable from 0.05 to 0.9 MPa (7-130 psi), which applies with this unit's manual drain. It is the size 300 body with a PT1/4 (1/4 in) PT thread, a polycarbonate bowl with manual drain, a fitted round gauge reading in psi, a standard (non low-pressure) regulator, and a mounting bracket included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C08MC2W AirTAC Filter Regulator PT1/4, 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. |
|---|---|
| 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) |
Feeding clean, regulated air to the tool-changer and clamping circuits of a CNC machining centre, where the 5 um element protects fine solenoid valves and the regulator holds a steady set pressure for consistent clamping force.
Conditioning the air feeding pneumatic cylinders and grippers on a carton packaging line, keeping moisture and particles out of the actuators while the regulator maintains the pressure the sealing and forming stations were set up with.
Supplying filtered, regulated air to a laboratory automation skid or analytical instrument enclosure, where the fine 5 um grade and a visible psi gauge give technicians a clean, monitored supply for sensitive pneumatic functions.
Start with the port step: this unit is size 300 with a PT1/4 (1/4 in) PT thread; larger sizes (400, 600) carry larger ports and higher flow capacity, so size up if your line needs more air. Choose the drain type to match duty: manual drain (this unit) needs periodic draining by hand, while automatic or differential-pressure drains suit unattended installations. Choose the 5 um element (this unit) where downstream valves and cylinders need finer protection, or the 40 um standard grade for general pre-filtration. Gauge options are the embedded square gauge or an external round gauge, in MPa, psi or bar scales - this unit has a round psi gauge. Thread is PT as standard; G (BSPP) and NPT are order options. A mounting bracket is included.
One honest note before you order: flow for this series is published as curves, not a single rated figure, so send us your application details and we will confirm the sizing against the datasheet before you commit.
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 rather than a single rated figure, so we do not quote a rated flow number. Tell us your application - port size, downstream demand and acceptable pressure drop - and we will confirm the relevant datasheet figures on request before you order.
The M in the code specifies a manual drain: accumulated water in the bowl is released by hand. If the installation runs unattended or in humid conditions, the same GFR300 body is available with an automatic drain or the differential-pressure drain (the default), and the manual-drain version carries the wider 0.05-0.9 MPa (7-130 psi) regulation range.
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.