The AirTAC GFR300C10JNTK 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 GFR300C10JNTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 configuration has a 3/8 in NPT port, a 40 um standard filtration element, a differential-pressure drain on the polycarbonate bowl, and a built-in reverse (check) valve. It is supplied without a gauge and without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range for this differential-pressure-drain unit is 0.15-0.9 MPa (20-130 psi), and the working temperature range 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, plus drain, filtration-grade, gauge, thread and bracket options so you can match the unit to your line. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing and the full datasheet for your application on request.
| Model | GFR300C10JNTK 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) |
Point-of-use conditioning for case packers, carton sealers and bagging machines: water and debris are dropped out before the air reaches sealing cylinders, and the set pressure keeps jaw and clamp actuators consistent through the shift.
Feeding tool changers, clamps and air-blast nozzles on a machining centre with clean, regulated air, so chip-clearing jets and drawbar cylinders see stable pressure regardless of shop-header fluctuations.
Supplying sorting and accumulation lines where pop-up diverters, gate stoppers and pusher cylinders fire repeatedly; the filter protects valve spools from particulate while the regulator holds the pressure the divert mechanics were set up with.
Everything in this code is a real choice: size 200/300/400/600 sets the port and the air demand the unit can serve, so step up a size if your line draws more flow. Drain type is differential-pressure here (code blank); automatic (A) or manual (M) are available. Filtration is the 40 um standard element, with 5 um (W) offered where finer filtration is needed. Gauge can be fitted or omitted - this unit has none - in MPa, psi or bar scale. Thread is PT as standard, with G (BSPP) and NPT as order options; this unit is NPT. Bracket is omitted (J) but can be specified. Regulation range on this differential-pressure-drain unit is 0.15-0.9 MPa (20-130 psi). Because flow is published as curves, not 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 number, so we do not quote a figure here. Send us your application details and we will confirm the flow curve and the full datasheet figures for this size 300, NPT3/8 unit on request.
The N in the code means no gauge is fitted. GFR filter regulators can be ordered with an embedded square gauge or an external round gauge, in MPa, psi or bar scale. If you want downstream pressure visible at the unit, ask us for the gauge-equipped variant of this size and port.
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.