The AirTAC GFR300C10C2WK AirTAC Filter Regulator PT3/8, 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 GFR300C10C2WK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This size 300 unit connects at PT3/8 and is fitted with the fine 5 um filter element (code W) instead of the standard 40 um, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a reverse/check valve (code K) that holds downstream pressure if the supply is interrupted. Outlet pressure is set with the external round gauge supplied in psi scale, within the standard regulation range of 0.15-0.9 MPa (20-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the size 300 bowl is polycarbonate (PC). A mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT thread, and an optional reverse/check valve. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C10C2WK AirTAC Filter Regulator PT3/8, 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, pressure-set air to the clamps, tool-change actuators and pneumatic chucks on a machining centre, with the 5 um element protecting fine control valves from particles and water.
Supplying carton-forming, sealing and labelling cylinders on a packaging conveyor, where the regulator holds a steady set pressure so cycle consistency does not drift with plant air fluctuations.
Conditioning air at the drop to spray equipment and air-assisted applicators in a paint shop, where the 5 um grade and water removal help keep finish quality stable at the gun.
Choose the size by the port and flow step you need: 200, 300, 400 or 600, with larger sizes carrying larger ports and more flow. This unit is size 300 with a PT3/8 connection in standard PT thread; G (BSPP) and NPT versions are catalogue options you can order instead. Filter grade is a real choice: 40 um is the standard element, while this configuration carries the 5 um (W) element for finer protection of downstream components. Drain type is another: differential-pressure (as fitted here), automatic, or manual. Gauge style and scale are selectable - an embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales; this unit has the round gauge in psi. A reverse/check valve is optional (fitted here), and a mounting bracket is included.
Sizing honestly: flow for the GFR series is published as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and approximate air demand, and we will confirm the correct size 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 flow for the GFR series as curves rather than a single rated figure, so we do not state a number here. Send us your supply pressure, set pressure and air demand, and we will confirm the flow and sizing from the datasheet on request before you order.
The W in the code GFR300C10C2WK selects the optional 5 um filter element, which removes finer particles than the 40 um standard grade. It is the right choice when feeding precision valves, sensitive actuators or finishing equipment; for general plant air with less demanding downstream components, the standard 40 um grade is usually sufficient.
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.