The AirTAC GFR300C10MJC3WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10MJC3WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is decoded as a 3/8 in NPT port, a fine 5 um filter element (code W), a manual drain, a standard regulator adjustable from 0.05-0.9 MPa (7-130 psi), a fitted reverse/check valve, an external round gauge with bar scale, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, and embedded square or external round gauges with MPa, psi or bar scales. Flow figures for this series are published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300C10MJC3WTK AirTAC Filter Regulator NPT3/8 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 air preparation for pneumatic tooling and clamps on a machining cell: the 3/8 in NPT port feeds the drop line, the 5 um element polishes the air and the regulator holds a steady setting at the machine.
Clean, regulated air for cylinders and grippers on a packaging or cartoning line, where the manual drain suits a shift pattern with a scheduled walk-round and the check valve holds the downstream setting if supply dips.
Regulated, fine-filtered air to instruments and pneumatic fixtures on a lab or test bench, with the bar-scale round gauge giving a direct local reading at the bench for repeatable test conditions.
Choose the GFR300 size and its 3/8 in port against the air consumption of the tools or actuators it will feed - larger sizes carry larger ports and more flow. This unit already carries the fine 5 um element (W); the series alternative is the 40 um standard grade if only coarse water and particulate removal is needed. Drain type is a real choice: this unit is manual drain, emptied by hand, while automatic and differential-pressure drains suit unattended installations. Gauge options are the embedded square gauge or an external round gauge in MPa, psi or bar scales - this unit has a round gauge with bar scale. Thread is PT as standard with G and NPT as order options; this unit is NPT. A reverse/check valve (fitted here) and a mounting bracket (not fitted here) are also selectable. Because flow is published 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 as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
This configuration carries code M, a manual drain: condensate collected in the polycarbonate bowl is emptied by hand, which suits installations that are checked regularly. If the unit will sit unattended, the same series is available with an automatic or differential-pressure drain - ask us to 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.