The AirTAC GFR300C10F1WT AirTAC Filter Regulator NPT3/8, 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 GFR300C10F1WT is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a metal drain bowl but no lubricator. This size 300 unit has a 3/8 in NPT port, the 5 um filter element (the W option, versus the 40 um standard), a differential-pressure drain, and an embedded square gauge scaled in MPa. The standard regulator adjusts 0.15-0.9 MPa (20-130 psi) with this drain type, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). A mounting bracket is included; no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options for drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge type and scale, thread (PT standard, G and NPT to order) and bracket. Flow for the series is published as curves rather than a single rated figure, so we confirm datasheet and sizing figures on request.
| Model | GFR300C10F1WT AirTAC Filter Regulator NPT3/8, 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) |
Point-of-use conditioning for a CNC machining cell: the 5 um element strips water and fine particulate before the machine's solenoid valves, while the regulator holds a steady set pressure for clamps and tool changers.
Mounted at the drop feeding a packaging conveyor's cylinder bank, it cleans the incoming air and lets technicians dial one set pressure for consistent box-push and divert strokes.
On a skid of quarter-turn pneumatic ball valves, the unit conditions the instrument-air branch and holds the actuator supply at the pressure the control loop expects.
Size 300 with a 3/8 in NPT port sits mid-range in the GFR family (sizes 200/300/400/600); step up or down a size when your flow demand or existing piping calls for it. This unit is specified with the 5 um (W) element rather than the 40 um standard, a differential-pressure drain, an embedded square gauge scaled in MPa (psi and bar scales are also available), a standard regulator with 0.15-0.9 MPa (20-130 psi) adjustment at this drain type, and a mounting bracket; no reverse/check valve is fitted. Thread here is NPT, with PT as the standard and G also available to order. Flow is published as curves, not 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 series as curves rather than a single rated figure, so we do not quote one number. Send us your line size, working pressure and expected demand, and we will confirm sizing against the datasheet on request.
The W in the code selects the 5 um filter grade, the finer of the two catalogue options, which suits points of use with sensitive downstream components such as solenoid valves. The 40 um element remains the standard choice for general plant air, and both grades are available across the GFR 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.