The AirTAC GFR30015MJNTK 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 PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30015MJNTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 300 unit has a 1/2 in NPT port, a manual drain for emptying the bowl, a standard 40 um filter element, and a built-in reverse/check valve that holds downstream pressure when the supply is interrupted. No gauge is fitted and no mounting bracket is included, so add a separate gauge if you need a local pressure reading. The regulator adjusts from 0.05 to 0.9 MPa (7-130 psi) with this manual-drain configuration, and the maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C (non-freezing), and the bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR line is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade (40 um standard, 5 um optional), gauge and thread (PT standard, with G and NPT as order options). Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30015MJNTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| Reflux valve | Fitted (reverse flow permitted) |
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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (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. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Installed at the drop from a plant air main to a packaging machine's air manifold, it cleans water and particles out of the supply and holds a set working pressure for the machine's cylinders and valves. The check valve keeps the setting in place during brief supply dips.
Mounted ahead of the solenoid valves driving conveyor stopper and pusher cylinders, it strips condensate and pipe scale from the line and lets maintenance set the exact pressure the actuators were sized for. The manual drain suits a station checked on a daily walk-round.
Fitted on the air inlet panel of a CNC machine tool or similar automated equipment, it conditions the supply before it reaches the machine's internal FRL take-off and air-powered clamps, with the 1/2 in NPT port matching the machine's standard inlet connection.
Size 300 with a 1/2 in NPT port is the right step when your line flow and piping sit at the half-inch level; step up to size 400 or 600 for larger flow, or down to 200 for compact circuits. The manual drain on this unit means an operator opens the drain to discharge collected water - choose it where the unit is accessible and checked routinely; pick the automatic drain where unattended operation matters. The standard 40 um element suits general plant air; specify the W variant for 5 um filtration if downstream equipment needs finer particles removed. No gauge is fitted, so add an external gauge in your preferred scale if you need to set and monitor pressure. The NPT thread matches US piping; PT is the catalogue standard and G (BSPP) is also an order option. A mounting bracket is not included with this code.
One honest note before ordering: flow for this series is published as curves, not as a single rated number, so we cannot quote a rated flow here. Send us your application details and we will confirm sizing against the datasheet curves on request.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow 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 we do not quote a rated flow, Cv or SCFM number here. Send us your application details and we will confirm the datasheet flow figures and check the sizing for you on request.
The M in the code means the bowl drain is opened by hand to discharge collected water, rather than draining automatically or by differential pressure. It suits installations that are accessible and checked routinely. If the unit will sit unattended, ask us about the automatic-drain variant of the same size.
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.