The AirTAC GFR300C15JNTK AirTAC Filter Regulator NPT1/2 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 GFR300C15JNTK is an AirTAC GFR filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air at the 40 um standard grade and regulates downstream pressure within the 0.15-0.9 MPa (20-130 psi) adjustment range of the standard regulator type. This size 300 unit is fitted with a 1/2 in NPT port, a differential-pressure drain, and a reverse/check valve; no gauge is fitted and no mounting bracket is included. The polycarbonate bowl carries a maximum inlet pressure of 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the series you can order alternative drain types (automatic or manual), a 5 um filter element (code W), gauge versions with square or round dials and MPa, psi or bar scales, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR300C15JNTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Installed at the air drop feeding a CNC machining centre's clamps and tool-change cylinders, cleaning the supply and holding a steady regulated pressure for the machine's valve stack.
Mounted on the air preparation leg of a packaging conveyor's flap-fold and press cylinders, dropping out condensate and particulate while keeping actuator pressure consistent across the shift.
Placed ahead of the fixture-clamp actuators on an assembly-plant fixture circuit, where the check valve helps hold the set downstream pressure and the 40 um element protects the clamping valves.
Start with the port step: GFR units come in sizes 200, 300, 400 and 600, stepping up through 1/8 in to 1 in ports, so match the size to the pipe and the air demand of the circuit. Then choose the drain: differential-pressure (this unit's default), automatic for unattended condensate removal, or manual where an operator drains the bowl. Filter grade is 40 um standard or 5 um with the W code if finer particulate capture is needed. Gauge options add a square or round dial with MPa, psi or bar scales, and thread options are the PT standard or G (BSPP) and NPT. Brackets are optional on this series. Because flow is published as curves rather than a single rated number, 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 there is no one rated flow number we can quote. Tell us your line pressure, port size and the air demand of your circuit, and we will confirm the sizing against the datasheet curves on request before you order.
The N code means no gauge is supplied with this unit, so you set the regulator against your own downstream instrumentation. GFR versions with a square or round gauge in MPa, psi or bar scales are available in the series, and we can confirm the gauge-equipped equivalent on request.
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.