The AirTAC GFR300C10AJNT AirTAC Filter Regulator NPT 3/8 in 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 GFR300C10AJNT is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure in one body. This size 300 unit has 3/8 in NPT ports, an automatic drain that ejects collected condensate without manual attention, and standard 40 um filtration. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi) against a maximum inlet pressure of 1.0 MPa (145 psi). No gauge is fitted and no mounting bracket is supplied; operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the series include manual or differential-pressure drains, 5 um filtration (code W), gauges with MPa, psi or bar scales, a reverse/check valve, and G (BSPP) or NPT threads in place of the PT standard. Rated flow for this series is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C10AJNT AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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 supply for a CNC machining cell: the filter stage strips water and swarf-laden particulate from the shop air before it reaches tool-change cylinders and clamps, while the regulator holds a steady downstream pressure for repeatable clamping.
Feeding pneumatic cylinders and diverters on a bottling or carton-packing conveyor line, where the automatic drain handles condensate on a line that runs through shifts without an operator bleeding each bowl by hand.
Conditioning the air feeding a manifold that serves pick-and-place grippers and screwdriver feeders on an automated assembly station, keeping supplied pressure stable as multiple actuators cycle in sequence.
Size and port are the first choice: this unit is size 300 with 3/8 in NPT ports; step up to size 400 or 600, or down to 200, as your line's air demand changes, and match the port to your piping. The automatic drain on this model suits installations that run unattended, since condensate is ejected without someone opening a drain valve by hand; the family also offers manual and differential-pressure drains. Filtration is the standard 40 um grade - choose the 5 um (W) variant only where downstream equipment needs finer particulate removal. No gauge is fitted on this code, and no mounting bracket is supplied. Thread is NPT here; PT is the AirTAC standard and G (BSPP) is also available to order.
One honest note before you order: flow for this series is published as curves, not a single rated number, so send us your application details and we will confirm the datasheet and correct sizing before you buy.
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 there is no honest one-number answer we can print. Send us your line pressure, downstream set pressure and the equipment you are feeding, and we will confirm the datasheet and check the sizing against your application before you order.
The N in the code means no pressure gauge is fitted and J means no mounting bracket is supplied, so you would read the downstream setting on your own gauge or add a gauge configuration from the same family. Other GFR300 codes include a gauge (square embedded or round external, with MPa, psi or bar scales) and bracket mounting as decodable options.
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.