The AirTAC GFR300C08MJC2G 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.
The GFR300C08MJC2G is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your set point in a single body. This configuration has a G1/4 (1/4 in) port, a manual drain on the polycarbonate bowl, a 40 um standard filter element, and a round pressure gauge reading in psi. The regulator is the standard type with a 0.05-0.9 MPa (7-130 psi) adjustment range, no reverse/check valve is fitted, and no mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating 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 ports from 1/8 to 1 in, and options including manual, automatic or differential-pressure drains, a 5 um (W) filter element, embedded square or external round gauges with MPa, psi or bar scales, G or NPT threads and a mounting bracket. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR300C08MJC2G 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) |
Feeding filtered, regulated air to tool-changer and clamping circuits on a CNC machining centre, where the 40 um element catches pipe scale and rust and the regulator holds a steady set point for repeatable clamp force.
Conditioning the supply ahead of directional valves and cylinders on a carton-sealing line: condensate and dirt are drained off manually at shift checks while downstream pressure stays fixed for consistent sealing-jaw action.
Supplying air to diverter gates and stoppers on a warehouse conveyor, where the round psi gauge lets maintenance verify the set pressure at a glance and the manual drain is emptied during scheduled rounds.
Choose the size and port against the air your application actually consumes: size 300 with a G1/4 port sits mid-range in the GFR line, and stepping to 400 or 200 changes both the port and the flow capacity. Decide the drain first: this unit is manual drain, which suits periodic supervised draining and gives the widest 0.05-0.9 MPa (7-130 psi) regulation range; automatic and differential-pressure drains suit unattended lines but carry a 0.15-0.9 MPa (20-130 psi) range. The filter grade here is the 40 um standard element; specify the W code if you need 5 um. The fitted round gauge reads psi; an embedded square gauge with MPa or bar scales is the alternative. Thread is G (BSPP); PT is the standard series thread and NPT is also an order option. This configuration has no mounting bracket; J-coded units omit it and others include one. Flow is published as curves, not a single rating, so send us your flow and pressure requirements 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 required flow and working pressure and we will confirm from the datasheet whether this G1/4 unit suits your application before you order.
The M in the code specifies a manual drain: someone opens the drain on the polycarbonate bowl to release collected water. It also gives the widest regulation range, 0.05-0.9 MPa (7-130 psi). Automatic and differential-pressure drains remove condensate unattended but carry a 0.15-0.9 MPa (20-130 psi) range, so choose those for lines without regular supervision.
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.