The AirTAC GFR300C08MJF2WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08MJF2WTK is an AirTAC filter regulator: water and particulate removal plus pressure regulation in a single body. This configuration takes a 1/4 in NPT port, filters to 5 um instead of the standard 40 um, drains the metal bowl by hand (manual drain), and reads outlet pressure on an embedded square gauge scaled in psi. A built-in check valve holds the downstream setting if the upstream supply is lost, and no mounting bracket is included with this code. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 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 filter-regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and options for automatic or differential-pressure drains, 40 um or 5 um elements, round or square gauges in MPa, psi or bar scales, and G, NPT or PT threads. Flow is published as curves rather than a single rating, so we confirm datasheet figures for your application on request.
| Model | GFR300C08MJF2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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) |
Point-of-use air preparation for a CNC machining cell: the 5 um element protects directional valves and clamping fixtures from water and fine particulate, while the regulator holds a steady fixture-clamping pressure at the machine drop.
Feeding pneumatic diverters and stop gates on a bottling-line conveyor: the regulator keeps the gate cylinders at a consistent setting so cartons are pushed without crushing, and the check valve holds the setting through brief supply dips.
Air preparation at a robotic welding cell drop: filtered, regulated air to the weld-gun actuator circuit, with the manual drain letting maintenance purge accumulated water from the bowl at the start of each shift.
The GFR300 size sits between the compact GFR200 and the larger GFR400/600 bodies, so match the 1/4 in port and body size to the air demand of your equipment - we confirm exact figures from the datasheet on request. This unit is ordered with a 5 um element instead of the standard 40 um, a manual drain instead of automatic or differential-pressure, a square gauge reading in psi, and a built-in check valve that holds the downstream setting when upstream air is lost. The thread here is NPT; PT is the standard thread and G (BSPP) is also a catalogue option to order. No mounting bracket is included with this code. Because AirTAC publishes flow as curves rather than a single rating, ask us to check the curve 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 GFR300 as curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure and the air demand of your equipment and we will confirm the sizing from the datasheet on request.
The metal bowl collects water and the manual drain lets you purge it by hand, so plan a routine drain as part of your maintenance schedule. If you prefer hands-off operation, the same GFR300 family is available with an automatic or differential-pressure drain - we can quote that variant.
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.