The AirTAC GFR30015MJC3WTK AirTAC Filter Regulator NPT 1/2 in is a genuine G-series filter regulator: water separation, 5 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 AirTAC GFR30015MJC3WTK is a GFR-series filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 5 um element (the fine W grade, versus the standard 40 um) and holds a set downstream pressure adjustable from 0.05 to 0.9 MPa (7-130 psi). This 300-size unit is fitted with a 1/2 in NPT port, a manual drain bowl in PC (polycarbonate), a round external gauge scaled in bar, a reverse/check valve that holds downstream pressure when the supply drops, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi); working temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series is published in 200, 300, 400 and 600 sizes with port options from 1/8 to 1 in, PT as the standard thread and G or NPT as order options, plus a choice of drain type, filter grade, gauge style and scale, and bracket or no bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30015MJC3WTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 | Fitted — round, bar scale |
| 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. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeds clean, regulated air to the tool-change clamps and pneumatic actuators on a CNC machining centre, with the 5 um element protecting tight-tolerance valve spools and the check valve holding clamp pressure if the shop supply dips.
Sits ahead of the cylinders and grippers on a carton sealing and case-packing conveyor, regulating the supply to a stable setpoint so seal jaws and box pushers repeat consistently through the shift.
Installed at the drop point of a textile mill's compressed-air ring main, conditioning the air feeding loom and winder pneumatics, with the manual drain bowl emptied during scheduled rounds in a staffed plant.
Size the unit by the port and flow step: 200, 300, 400 and 600 move up in port and capacity, and this 300 size carries a 1/2 in NPT port. Because flow is published as curves and not a single rating, ask us to confirm sizing against your air demand before ordering. The choices baked into this code are all real catalogue options: manual drain (wipe the bowl by hand on a schedule - choose automatic or differential-pressure drain if the unit sits where nobody passes), the 5 um W element where finer filtration is wanted over the standard 40 um, a round gauge scaled in bar (square embedded gauge and MPa/psi scales are the alternatives), NPT thread where PT is the standard and G is the other option, and the K reverse/check valve for holding downstream pressure. Bracket is omitted on this unit; a bracketed version exists if panel mounting is needed.
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 GFR flow as performance curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your line pressure and the air demand of the equipment you are feeding, and we will confirm the sizing from the datasheet on request.
The M in the code selects the manual drain: condensate collected in the PC bowl is drained by hand on a maintenance schedule, which suits attended installations (automatic and differential-pressure drains are the other catalogue options). The K adds a reverse/check valve, which holds downstream pressure if the upstream supply is lost - useful where a dropped pressure would release clamps or stop a process.
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.