The AirTAC GFR300C10MLC1WTK AirTAC Filter Regulator NPT3/8 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 AirTAC GFR series combines filtration and pressure regulation in a single body: air passes a filter element that removes water and particulate, then flows through the pressure regulator, so one unit both conditions and controls the supply. This GFR300C10MLC1WTK is the 300 size with a 3/8 in NPT thread, a 5 um filter element (code W), a manual drain (code M) on the metal bowl, the low-pressure regulator type (code L), a round MPa pressure gauge fitted (code C1) and a reverse/check valve (code K). 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 GFR300 sits in a family offered in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard or 5 um), gauge style and scale, and PT, G or NPT thread. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C10MLC1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Filtering and regulating the supply to clamp cylinders on a machining fixture, where the 5 um element helps keep water and pipe-scale out of valve and seal tolerances and the low-pressure type suits reduced clamping pressures.
Conditioning air for the flap-fold and tape-head cylinders on a packaging conveyor, with the round MPa gauge giving the line operator a local pressure readout and the manual drain emptied during changeover.
Supplying filtered, regulated air to gripper cylinders on a small assembly cell; the reverse/check valve is fitted and the included bracket lets the unit mount beside the cell's valve manifold.
Choose the size and port against the air demand of the circuit: the 300 size here carries a 3/8 in NPT port, and larger sizes in the family give larger ports and more flow. This unit is the low-pressure regulator type, so if your line runs at reduced regulated pressure, confirm the setting range with us before ordering. The 5 um element (code W) suits circuits with finer tolerances than the 40 um standard; the manual drain means an operator opens the drain periodically rather than relying on an automatic or differential-pressure arrangement. The round MPa gauge is fitted; embedded square gauges and psi or bar scales are alternatives within the family. PT is the standard thread and G or NPT are order options - this unit is built with NPT. A mounting bracket is included. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing 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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow from the datasheet for this 300-size, 3/8 in NPT unit before you order.
Code M means the metal bowl drains only when the drain is opened by hand, so plan a routine drain check into maintenance. The same GFR family is also available with automatic or differential-pressure drains if you would rather not rely on an operator.
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.