The AirTAC GFR300C10AJC1WTK 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 AirTAC GFR300 series combines filtration and pressure regulation in a single body: compressed air is cleaned of water and particulate, then regulated to your set pressure, all in one compact unit. This configuration is the 300 size with a 3/8 in NPT port, fitted with the fine 5 um filter element (code W), an automatic drain that ejects collected condensate without manual attention, a round external pressure gauge scaled in MPa, and a built-in reverse/check valve that helps hold the downstream setting if supply pressure dips. It is supplied without a mounting bracket (code J) for direct in-line installation.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, and gauge or no-gauge variants. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C10AJC1WTK 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) |
Feeding a machining centre's pneumatic clamps and tool-change cylinders: the 5 um element protects fine directional valves from particulate and water, while the regulator holds a steady setting for consistent clamping.
Supplying stopper cylinders and product diverters on a bottling or packaging conveyor, where the automatic drain continuously clears condensate from humid plant air and the check valve helps hold the setting through supply dips.
Conditioning the air feed to impact drivers and torque stations on an assembly line: filtered, regulated air at the station drop, with the 3/8 in NPT port matching typical drop hoses and the round MPa gauge for at-a-glance setting checks.
Choose the size and port step (200 through 600, 1/8 in to 1 in) against the air demand of your circuit; this unit is the 300 size with a 3/8 in NPT connection. Pick the filter grade for the sensitivity of the downstream equipment: 40 um is the standard element, while the 5 um element fitted here suits finer valves and instruments. Select the drain type for your installation: differential-pressure (default), automatic, or manual. Gauge options are the embedded square gauge or the external round gauge, with MPa, psi or bar scales; this unit carries a round MPa gauge. The reverse/check valve (code K) and the no-bracket option (code J) are both decodable from the code, and the trailing T confirms NPT thread where PT is the catalogue standard.
Because flow is published as curves and not as a single rated number, we do not quote a rated flow figure. Send us your application details 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 this series as curves rather than a single rated figure, so we do not state a rated l/min or SCFM number. Tell us your application and required flow, and we will confirm the sizing against the datasheet on request before you order.
The code's A position means an automatic drain: collected condensate is ejected from the bowl without anyone opening a manual drain, which suits unattended or hard-to-reach installations. The W code selects the optional 5 um filter element instead of the 40 um standard, for finer protection of downstream valves and instruments. The bowl on this 300 size is polycarbonate.
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.