The AirTAC GFR300C15MJNT AirTAC Filter Regulator NPT 1/2 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 GFR300C15MJNT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in a single body. This size 300 unit is threaded NPT 1/2 in, carries the standard 40 um filter element, and drains condensate by hand through its manual drain. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi); no gauge is fitted in this configuration and no mounting bracket is included. Max inlet pressure is 1.0 MPa (145 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, and can be ordered with automatic or differential-pressure drains, a finer 5 um element (code W), a round or square pressure gauge, G or NPT threads and a mounting bracket. Because flow for the GFR series is published as curves rather than a single rating, ask us to confirm the sizing figures from the datasheet for your application.
| Model | GFR300C15MJNT AirTAC Filter Regulator NPT 1/2 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 preparation for the pneumatic clamps and tool-change cylinders on a CNC machining centre, delivering clean, regulated air on a 1/2 in line at the machine.
Filtered, regulated air for the pick-and-place cylinders and sealing jaws on a carton packaging line, with the manual drain opened at end of shift to clear collected condensate.
Supply preparation for air-driven nutrunners and gripper actuators at an automotive assembly station, where one body handles both water/particulate removal and pressure setting.
Within GFR you step size (200/300/400/600) and port (1/8 to 1 in) against the flow your line needs; this unit is the size 300, 1/2 in NPT step. Drain choice matters: the differential-pressure drain (default) clears condensate while air is flowing, the automatic drain works on its own, and the manual drain fitted here is opened by hand, which suits supervised or intermittent duty. The standard element is 40 um; specify code W for 5 um where finer filtration is required. A round or square gauge with MPa, psi or bar scale can be added, PT is the standard thread with G and NPT as order options, and a bracket is optional. Flow is published as curves, not a single rating, so send us your pressure and flow requirements and we will confirm sizing from 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 flow for the GFR series as curves rather than a single rated figure, so no flow number is quoted here. Tell us your working pressure and required flow and we will confirm from the datasheet whether this size 300, 1/2 in unit is correctly sized for your application.
Condensate collects in the bowl until you open the drain by hand, typically at the start or end of a shift. If scheduled draining is not practical at your site, the same size is available with an automatic drain (code A) or with the differential-pressure drain that is the default for the family.
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.