The AirTAC GFR300C15MJF1WTK 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 GFR300C15MJF1WTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in one body. This configuration is built on the size-300 housing with a 1/2 in NPT port, a 5 um filter element for finer air quality, a manual drain on the bowl, an embedded square gauge scaled in MPa, and a reverse/check valve fitted. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and the unit is rated for a maximum inlet pressure of 1.0 MPa (145 psi) and operation from -5 to 70 C (non-freezing). It has no mounting bracket (code J).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and catalogue options for drain type, filter grade, gauge style and scale, thread form and bracket. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C15MJF1WTK 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) |
Feeding clean, regulated air to tool changers, clamps and pneumatic workholding on a machining centre, where the 5 um element protects fine valve internals and the gauge lets setters read line pressure at a glance.
Regulating supply air to carton sealers, case erectors and wrapper cylinders on a packaging line, with the manual drain bled during shift changeovers and the check valve holding the circuit while upstream pressure is switched.
Point-of-use regulation for grippers and small cylinders in an assembly cell, keeping actuator pressure stable as multiple stations draw from a shared header, with the 1/2 in port matching the cell's drop lines.
Size and port set the air capacity: this unit is size 300 with a 1/2 in NPT port; step up to size 400 or 600, or down to 200, if your line needs a different port and flow envelope. Drain choice matters: a manual drain (this unit) needs periodic bleeding, while automatic and differential-pressure drains discharge condensate without operator attention. Filter grade is 40 um standard or 5 um (code W) for finer protection - this unit carries the 5 um element. The gauge is the embedded square type scaled in MPa, with external round gauges and psi or bar scales available as options. Thread is NPT here; PT is the standard form and G (BSPP) is also a catalogue option. No mounting bracket is fitted (code J). Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing against 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 quoting one number would not be honest. Send us your application details and we will confirm the flow curve and correct sizing from the datasheet on request.
This unit uses a manual drain: condensate collects in the bowl until an operator opens the drain, which suits lines with scheduled maintenance rounds. If you cannot rely on that, the same filter regulator is available with an automatic drain (code A) or the differential-pressure drain (blank code), which discharge condensate without attention.
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.