The AirTAC GFR300C08MLJF1TK AirTAC Filter Regulator 1/4 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 AirTAC GFR300C08MLJF1TK is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one compact body. This unit is built in the 300 size with a 1/4 in NPT port, a metal bowl with a manual drain, and the 40 um standard filter element. The regulator is the low-pressure type, a square pressure gauge scaled in MPa is embedded, and a reverse (check) valve is fitted. The unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200, 300, 400, 600) with port options from 1/8 to 1 in, PT as the standard thread and G or NPT as catalogue options to order, plus a choice of manual, automatic or differential-pressure drains, 40 um or 5 um filtration, and gauge style and scale. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08MLJF1TK AirTAC Filter Regulator 1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeds filtered, regulated air to the clamping cylinders on a pneumatic press, with the low-pressure regulator holding a gentle, repeatable clamp force and the check valve holding downstream pressure if the supply dips.
Point-of-use preparation for the seal bars and film-transport actuators on a packaging line, keeping water and debris out of the valves while the manual drain lets operators empty the bowl during changeover.
Conditions the air feeding tool-changer, fixture-clamping and purge circuits on a CNC machining centre, with the 40 um element protecting downstream components and the MPa gauge giving a clear setting reference.
Choose the size and port against the air your line actually uses: this unit is the 300 size with a 1/4 in NPT port (PT is the standard thread; G and NPT are options to order). The drain here is manual, so the bowl is emptied by hand at intervals; if you would rather not schedule that, the same series is available with an automatic or differential-pressure drain. Filtration is the 40 um standard element, and the W code gives 5 um where finer protection is needed. The embedded square gauge reads in MPa, with psi and bar scales available. The regulator is the low-pressure type; its exact setting range is not published, so we will confirm it from the datasheet. A check valve is fitted and no mounting bracket is included with this code.
Because AirTAC publishes flow as curves rather than a single rated figure, we do not quote a flow number here. Send us your application details and we will confirm sizing and the exact datasheet figures 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 GFR-series flow as curves rather than a single rated number, so we do not quote a figure here. Tell us your operating pressure and air consumption and we will confirm the flow from the datasheet before you order.
The M in the code specifies a manual drain: the bowl is emptied by opening the drain by hand at intervals. If you prefer not to schedule that, the same GFR300 series is available with an automatic or a differential-pressure drain under a different code, and we can help you select it.
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.