The AirTAC GFR300C15MLJF1WTK 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 GFR300C15MLJF1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration is built for a 1/2 in NPT port, carries a 5 um filter element (the finer of the two published grades), and drains by hand through its manual drain. It is the low-pressure regulator type, so it suits circuits held well below standard line pressure - the exact adjustment range for this variant is not published, so confirm it with us against your setpoint. A square pressure gauge on an MPa scale is fitted, a reverse/check valve is included, and no mounting bracket comes with this unit.
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 options across drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um), gauge style and scale, thread (PT standard, G and NPT to order) and bracket. AirTAC publishes flow for these units as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300C15MLJF1WTK 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) |
Point-of-use preparation for a CNC machining cell: the 5 um element protects directional valves and cylinders from water and fine particulate while the regulator holds the reduced circuit pressure the machine builder specifies.
Feeding the air cylinders on a carton packaging and conveyor line, where the low-pressure regulator type holds a gentle working pressure for clamping and pusher action and the manual drain is emptied at scheduled shift checks.
Supplying pneumatic actuators on process lines that throttle or divert flow at low regulated pressure; the fitted reverse/check valve blocks reverse flow back through the unit if supply pressure is interrupted.
Size the unit by port and air demand: the GFR300 sits in the middle of the 200/300/400/600 range, and here it carries a 1/2 in NPT port - step up a size when the port or flow capacity of the line calls for it. Choose the drain to match maintenance practice: manual (this unit) empties only when opened, automatic drains continuously, and the differential-pressure default drains on a pressure drop. This unit carries the 5 um element rather than the 40 um standard; pick 5 um where downstream equipment needs finer particulate removal. The fitted square gauge reads in MPa; psi and bar scales are catalogue options, as is an external round gauge. Thread is NPT here; PT is the standard and G is also available to order. Flow is published as curves, not a single rating, so 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 the GFR300 as curves rather than a single rated figure, so there is no one rated flow number we can quote. Tell us your inlet pressure, set pressure and expected air demand and we will confirm the flow from the datasheet for your application.
This unit drains by hand: you open the manual drain to expel collected water, which suits installations checked on a regular maintenance round. If the unit sits where it cannot easily be reached, the catalogue offers automatic drain and the differential-pressure drain as alternatives on the same GFR300 body.
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.