The AirTAC AirTAC GFR300C08MLJC2WGK 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.
The AirTAC GFR300C08MLJC2WGK is a GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This G1/4 (1/4 in) configuration carries a 5 um filter element (code W), a metal bowl with manual drain, the low-pressure regulator type, and a round pressure gauge with psi scale. A reverse/check valve (code K) is fitted and the unit is supplied without a mounting bracket (code J). 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 from the GFR300 size of the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G or NPT threads. Filter grade, drain type, gauge style and scale, and bracket provision all vary by code within the family. Flow figures are published as curves rather than a single rating, so we confirm datasheet and sizing figures on request.
| Model | AirTAC GFR300C08MLJC2WGK 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) |
Feeding regulated low-pressure air to spray guns in a wood-finishing booth. The 5 um element addresses water and fine particles in the supply, and the manual drain is bled at the start of each shift.
Supplying regulated low-pressure air to the tape heads and flap actuators on a carton-sealing conveyor. The round psi gauge gives operators a local setpoint readout, and the coded check valve is part of the installed circuit.
Regulating supply air to pilot valves in a bottling line's control panel. The low-pressure regulator type suits circuits run below standard pressure, and the metal bowl with manual drain is emptied during scheduled maintenance rounds.
Choose the GFR300 size when your circuit port is 1/4 in and your air demand sits within the GFR300 flow curve; sizes 400 and 600 step up port and capacity, and we can check the curve against your application before you order. This code takes the 5 um element (W) instead of the 40 um standard, a manual drain instead of automatic or differential-pressure, a round psi gauge, and G thread - PT is the standard thread, with G or NPT as order options. The low-pressure regulator type is intended for circuits run below standard pressure; its exact adjustment range is not published, so confirm it with us. No bracket is included with this code, so plan your mounting accordingly.
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 performance curves rather than a single rated figure, so quoting one number would not be honest. Send us your inlet pressure, set pressure and air demand, and we will confirm the curve and sizing from the datasheet before you order.
Code M specifies a manual drain: condensate collected in the metal bowl is discharged by opening the drain when you choose, typically during scheduled checks. For installations that run unattended, the automatic-drain version (code A) removes that task; the catalogue also lists a differential-pressure default. This code is the manual-drain option.
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.