The AirTAC GFR300C10MJC2WK AirTAC Filter Regulator PT3/8, 5 um 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 GFR300C10MJC2WK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 5 um filter element (the finer of the two catalogue grades), a manual drain for the polycarbonate bowl, a round pressure gauge with a psi scale, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. The PT3/8 port suits 3/8 in pipework, the standard regulator covers 0.05-0.9 MPa (7-130 psi), and the unit is rated to 1.0 MPa (145 psi) maximum inlet at -5 to 70 C (non-freezing). No mounting bracket is included with the J suffix.
This is a genuine AirTAC part from the GFR filter-regulator line, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, PT, G (BSPP) or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um elements, and gauge choices. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request before you order.
| Model | GFR300C10MJC2WK AirTAC Filter Regulator PT3/8, 5 um |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Point-of-use conditioning on a CNC machine's compressed-air drop: the 5 um element and regulation in one body feed the machine's pneumatic tool-changer and clamping circuits, with the psi gauge giving the operator a local setpoint readout.
Conditioning the air feeding diverters, pushers and sealing cylinders on a packaging conveyor line, where the check valve holds the regulated pressure to the actuators if the main supply dips and the manual drain is emptied during shift checks.
A regulated, filtered supply at an individual pneumatic press or forming station, where each station sets its own pressure on the psi gauge independently of the header line and the 5 um element protects the press cylinder and valves.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a PT3/8 (3/8 in) port; larger sizes move more air at the same pressure loss. This code fixes the real decisions: a 5 um element instead of the 40 um standard (pick 5 um where downstream valves, cylinders or instruments want cleaner air), a manual drain (you or the operator open the drain at intervals, versus automatic or differential-pressure draining), a round gauge reading in psi, a fitted reverse/check valve, and no mounting bracket. Thread is PT as standard; G (BSPP) and NPT are orderable options. Because flow is published only as curves and not as a single rating, 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 only as curves, not as a single rated number, so we do not quote a figure here. Tell us your application's air demand and working pressure and we will confirm the sizing from the datasheet on request before you order.
The M in the code selects a manual drain: the polycarbonate bowl is emptied by opening the drain by hand at intervals, instead of the differential-pressure or automatic drain options. The W selects the 5 um element instead of the 40 um standard, giving finer particulate removal for the same filter-regulator body.
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.