The AirTAC GFR300C08MLJF2GK AirTAC Filter Regulator G1/4 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.
GFR300C08MLJF2GK is an AirTAC GFR300 filter regulator: a 300-size unit that removes water and particulate from compressed air and regulates pressure downstream, all in one body. This configuration has G1/4 (BSPP) ports, a manual drain on the metal bowl, a 40 um filter element, the low-pressure regulator type, an embedded square gauge with a psi scale, a fitted reverse/check valve, and no mounting bracket. The manual drain means the bowl is emptied by hand, so it suits points on the line where an operator already makes regular rounds.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 to 1 inch, and options include automatic or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, an external round gauge, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so send us your flow and pressure and we will confirm sizing from the datasheet on request.
| Model | GFR300C08MLJF2GK AirTAC Filter Regulator G1/4 |
|---|---|
| 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) |
Filtered, regulated air at a low set pressure for clamp cylinders on an assembly line, with the 40 um element keeping water and particles out of the fixture circuit.
Clean, regulated low-pressure air to instruments and small actuators on a pilot skid, where the manual drain lets an operator empty the metal bowl during routine rounds.
A filtered, regulated supply for valve positioners and pilot actuators on a process line, with the reverse/check valve fitted for circuits where backflow must be prevented.
Pick the size by the port and flow step: 200, 300, 400 and 600 move up in port and capacity, and this 300-size unit sits at G1/4. Drain type is a real choice: manual (this code) needs a hands-on check, automatic drains work on their own, and differential-pressure drains spill when the element loads up. Filter grade is 40 um standard or 5 um with code W. Gauges are the embedded square type with MPa, psi or bar scales, or an external round gauge. Threads are PT as standard with G and NPT to order, and a bracket is optional (this code has none). This code is also the low-pressure regulator type; the catalogue does not publish a single adjustment range for it, so tell us your set pressure and we will confirm suitability. Flow is published as curves, not a single rating, so 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 there is no one number we can quote honestly. Tell us your required flow and working pressure and we will confirm sizing from the datasheet on request.
Manual drain means the metal bowl is emptied by hand rather than automatically, so someone needs to check it as part of normal rounds. If you would rather not rely on that, automatic (code A) and differential-pressure (blank) drains are available across the GFR family.
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.