The AirTAC GFR300C10AJNTK 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 GFR300C10AJNTK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body for compressed air. It removes water and particulate through a 40 um element while the regulator sets downstream pressure anywhere in the 0.15-0.9 MPa (20-130 psi) range. The automatic drain ejects collected condensate without manual attention, and the fitted reverse/check valve holds the downstream setting if upstream supply is interrupted. This configuration has no pressure gauge fitted and no mounting bracket, with a 3/8 in NPT port.
This is a genuine AirTAC part in the GFR300 size series, one of four sizes (200/300/400/600) spanning the G-series port range from 1/8 to 1 inch. Automatic, manual and differential-pressure drains, a 5 um element option, gauge variants and G/NPT thread options exist across the family. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300C10AJNTK 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) |
Feeding clean, regulated air to a machining centre's tool-change cylinders and air bearings, with the check valve holding the set pressure through supply dips.
Conditioning air for carton-forming and case-sealing cylinders on a packaging conveyor, where the automatic drain keeps condensate off the valves between shifts.
Regulating supply to a pneumatic clamping fixture on a production cell, with filtered air protecting the clamp valves and the check valve maintaining clamp pressure if the main supply drops.
Size and port are the first choice: the GFR300 steps up from GFR200 when your line needs more flow at 3/8 in, and GFR400/GFR600 carry on above it. Drain type matters in use: automatic (this unit) suits unattended duty, manual drain suits stations someone already checks, and differential-pressure drain opens only when the element loads up. Filter grade is 40 um standard here; choose the W code for 5 um where finer particulate matters. Gauge style and pressure scale, PT/G/NPT thread and bracket options are all decodable from the code. Because flow is published as curves rather than a single rated figure, 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 this series as curves rather than a single rated figure, so no single number would be honest. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
The A in the code selects the automatic drain, which discharges collected condensate on its own - useful where the unit is not checked daily. The family also offers a manual drain (code M) and a differential-pressure drain (blank), which opens only when the element loads up. This unit has no gauge fitted (code N) and no bracket (code J).
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.