The AirTAC GFR300C10MJF1WT AirTAC Filter Regulator NPT3/8 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 AirTAC GFR300C10MJF1WT is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration is threaded NPT3/8 (3/8 in), carries the fine 5 um filtration element (code W), and uses a manual drain, so condensate is emptied by opening the drain when you choose rather than automatically. It regulates from 0.05 to 0.9 MPa (7-130 psi), tolerates up to 1.0 MPa (145 psi) inlet, and operates from -5 to 70 C (non-freezing). An embedded square gauge reading in MPa is fitted so the set pressure is visible at a glance; no mounting bracket is included and no reverse (check) valve is fitted.
This is a genuine AirTAC part from the GFR300 series. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, square or round gauges with MPa, psi or bar scales, and PT (standard), G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10MJF1WT AirTAC Filter Regulator NPT3/8 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. |
|---|---|
| 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) |
Feeding clean, regulated air to the tool-changer actuators and air-blast circuits of a CNC machining centre, where chips and moisture in the supply would foul valves and the machine demands a stable set pressure.
Conditioning the air feeding pneumatically actuated valves and sample-handling cylinders on an automated lab or analytical instrument skid, where the 5 um element protects fine components and the manual drain suits a supervised environment.
Supplying filtered, regulated air to the clamp and eject cylinders on a carton packaging line, keeping moisture and debris out of the directional valves while the square MPa gauge lets operators verify the clamp pressure setting.
Size the unit by stepping port size against the air demand of the circuit: this 300-size NPT3/8 unit sits in the middle of the GFR range, with smaller 200-size units below and higher-flow 400 and 600 sizes above. Choose the drain to match maintenance habits: manual (this unit) is emptied by hand, automatic drains continuously, and the differential-pressure default drains when the pressure drop across the element rises. Choose the 5 um element (this unit) where finer particulate removal matters, or the 40 um standard grade for general protection. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are decodable choices, and a bracket can be ordered where the J-coded no-bracket build does not suit the mounting. Flow is published as curves, not a single rating, so 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 as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Tell us your application and operating pressure and we will confirm the relevant datasheet flow figures on request before you order.
The M in the code sets a manual drain: condensate collected in the bowl is emptied by hand when you open the drain, instead of automatically as with the A-coded automatic drain or the default differential-pressure drain. The W in the code selects the fine 5 um filtration element instead of the 40 um standard grade, for applications needing finer particulate removal.
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.