The AirTAC GFR300C10MLF2WG AirTAC Filter Regulator G3/8, 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 GFR300C10MLF2WG is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size-300 unit is built around a G3/8 (BSPP) port with G thread (PT is the standard thread form; G and NPT are order options). It is the low-pressure type, so it is intended where controlled pressure sits below the standard regulator band; its exact adjustment range is not published, and we will confirm it against the datasheet on request. The 5 um filter element (code W) gives finer particulate capture than the standard 40 um grade, the manual drain lets an operator vent collected condensate on demand, and the metal bowl suits environments where a polycarbonate bowl is not preferred. A square pressure gauge scaled in psi is fitted, a mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with matching port steps, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um fine filtration, standard or low-pressure regulation, gauge scale options, and PT, G or NPT threads. Flow figures for this family are published as curves rather than a single rated number, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C10MLF2WG AirTAC Filter Regulator G3/8, 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) |
On a carton-sealing or case-packing line, this filter regulator cleans the air to 5 um and holds a low regulated pressure for gentle clamp and hold-down cylinders, with the square psi gauge giving the operator a direct setpoint readout.
On a process skid using low-pressure pneumatic positioners or pilot valves, the unit filters water and particulate from the supply and regulates it down to the pilot band, with manual drain allowing a scheduled condensate vent during shift checks.
At a sorting conveyor with pneumatic pusher gates, the unit conditions the supply line and regulates pressure for the gate actuators; the metal bowl and included bracket make it a practical point-of-use installation at the machine frame.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a G3/8 port, one step up from the 1/4 in size-300 alternative and below the 1/2 in size-400 units. Pick the drain type deliberately: manual drain (this code) suits attended installations where an operator vents the bowl, while automatic or differential-pressure drains suit unattended lines. The 5 um element here is the finer option versus the 40 um standard grade - select it when downstream valves or instruments need cleaner air. Gauge scale is selectable (MPa, psi or bar); this unit carries the square gauge in psi. Thread is selectable between PT (standard), G and NPT. Because flow for this family is published as curves rather than a single rating, 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 GFR family as curves rather than a single rated figure, so no single l/min or SCFM number is quoted here. Tell us your line pressure, regulated pressure and air demand, and we will confirm the flow curve and sizing from the datasheet on request.
The W code in this model selects the 5 um element instead of the 40 um standard grade, giving finer particulate capture for downstream valves and instruments. The M code selects a manual drain, so condensate is vented by an operator on demand - a good fit for attended machines, while automatic or differential-pressure drains suit unattended lines.
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.