The AirTAC GFR300C10MLF2WTK AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10MLF2WTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is a size 300 unit with a 3/8 in NPT port, a 5 um filter element (the finer of the two published grades), a manual drain on the metal bowl, and a low-pressure regulator fitted with an embedded square gauge scaled in psi. A reverse/check valve is fitted and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options for drain type, filter grade, gauge style and scale, thread (PT is the standard; G and NPT are order options) and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application on request.
| Model | GFR300C10MLF2WTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Feeds filtered, regulated air to the low-pressure clamping and hold-down cylinders of a carton-sealing machine, with the 5 um element protecting the directional valves and the psi gauge giving operators a direct setpoint readout.
Sits at the point of use on a lab air ring main, removing water and fine particulate before pneumatic bench instruments and holding a steady low-pressure supply that the square psi gauge makes easy to verify at a glance.
Conditions the air feeding spray guns on a finishing line: the 5 um grade strips water and fine dirt that would otherwise blemish the finish, while the low-pressure regulator holds the gun supply steady and the manual drain lets the operator clear the bowl at shift start.
Size and port set the flow path: this GFR300 unit carries a 3/8 in NPT port, sitting between the 1/4 in of the smaller step and the 1/2 in of GFR400; move to GFR400 or GFR600 when the circuit needs a larger port. Drain choice matters: this unit has a manual drain, so collected water is discharged by hand; automatic or differential-pressure drains are the alternatives where unattended removal is needed. The 5 um element (code W) filters finer than the 40 um standard - choose it where downstream valves and instruments need cleaner air. The embedded square gauge is scaled in psi; MPa and bar scales, and an external round gauge, are options. Thread here is NPT; PT is the AirTAC standard and G (BSPP) is also available to order. A mounting bracket is included. Because flow 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 series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the sizing from the datasheet curves on request.
The L code marks the low-pressure version of the GFR300 regulator rather than the standard type. AirTAC does not publish a numeric adjustment range for it in the material we hold, so we confirm the exact range from the datasheet on request. Maximum inlet pressure is 1.0 MPa (145 psi) and the working range is -5 to 70 C, non-freezing.
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.