The AirTAC GFR300C08MJF2GK AirTAC Filter Regulator G1/4 Manual Drain 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 GFR300C08MJF2GK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in one body. This configuration is built for a G1/4 (BSPP) port, has a manual drain bowl, a 40 um standard filter element, an embedded square gauge reading in psi, and a built-in reverse (check) valve so downstream pressure is held if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the regulating range is 0.05-0.9 MPa (7-130 psi), and the working temperature is -5 to 70 C (non-freezing). No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR family runs in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and is offered with automatic, manual or differential-pressure drains, 40 um or 5 um (W) filtration, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Because AirTAC publishes flow as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR300C08MJF2GK AirTAC Filter Regulator G1/4 Manual Drain |
|---|---|
| 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) |
Conditioning and regulating the air that drives film-sealing and clamp cylinders on a packaging machine, with the psi gauge giving operators a local set-point readout.
Filtering mill water and regulating supply pressure to pneumatic clamps and tool-change actuators on a machining centre, with the check valve holding the clamp if the supply drops.
Feeding clean, regulated air to diverter gates and stopper cylinders on a conveyor line, with the manual drain suited to a station that is checked each shift.
Size and port set the air capacity: this is a size 300 unit with a 1/4 in port; step up to size 400 or 600 when the circuit needs more flow at the same pressure. Choose the drain to match access: manual (this code) needs periodic draining, automatic drains on its own, and the differential-pressure drain is the catalogue default. Filter grade is 40 um as standard; specify W for 5 um when downstream equipment needs finer protection. The embedded square gauge reads psi here; MPa and bar scales and an external round gauge are alternatives, and the thread can be ordered in PT or NPT instead of G. This code has no mounting bracket; bracketed versions are available. 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 flow for the GFR series as curves rather than a single rated number, so there is no one l/min or SCFM figure we can quote. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
This code has a manual drain: someone opens the drain to expel collected water, which suits stations that are checked regularly. If the unit sits where draining is easy to forget, order an automatic-drain version instead; the differential-pressure drain is the catalogue default. The manual-drain version also gives the widest regulating range, 0.05-0.9 MPa (7-130 psi).
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.