The AirTAC GFR300C10AJC3WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10AJC3WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body, with a 3/8 in NPT port. This configuration is built for finer air quality with a 5 um filter element, an automatic drain that ejects collected condensate without manual attention, a round pressure gauge reading in bar, and a built-in reverse (check) valve that holds the downstream setting if upstream supply is interrupted. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge style and scale, and bracket options. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10AJC3WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Cleaning and regulating the shop-air feed to a machining centre's pneumatic tool clamps and chip-clearing jets: the 5 um element protects fine components while the regulator holds a steady setting and the check valve keeps it if supply dips.
Feeding treated air to the cylinders and grippers on a carton-forming or wrapping conveyor, where the automatic drain keeps condensate out of the valves during continuous runs and the 5 um grade suits sensitive directional valves.
A point-of-use filter regulator on the air drop to a robotic screwdriving or press-fit cell, giving the cell its own set pressure independent of the main header and a bar gauge the technician can verify at a glance.
Size 300 with a 3/8 in port sits in the middle of the GFR range: step up to 400/600 or down to 200 depending on the flow your line needs, and match the port to your piping. This unit already carries the finer 5 um element (the standard is 40 um) - keep it where downstream valves and cylinders want cleaner air, or order the blank code for 40 um where coarse protection is enough. The automatic drain suits unattended or hard-to-reach installations; choose manual where an operator drains daily, or the default differential-pressure drain where supply pressure fluctuates. The round gauge reads in bar; square embedded gauges and MPa or psi scales are alternatives. NPT is specified here; PT and G threads can be ordered. No mounting bracket is included with this code. Because flow is published as curves, not a single rating, send us your flow and pressure requirements 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 G-series flow as performance curves rather than a single rated figure, so we do not quote one number. Tell us your working pressure and required flow and we will confirm the datasheet curve for this exact configuration on request before you order.
The A in the code sets the automatic drain, which discharges collected condensate on its own - useful where the unit is mounted out of reach or the line runs unattended. The K sets a reverse (check) valve, which holds the regulated downstream pressure if the upstream supply is shut off or drops. Both are order options on the GFR family; the defaults are a differential-pressure drain and no check valve.
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.