The AirTAC GFR300C15MLJF2T 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 GFR300C15MLJF2T is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This 300-size unit is specified with a 1/2 in NPT port, a manual drain, the standard 40 um filter element and a metal bowl, and it is the low-pressure type, intended for circuits that run at a reduced regulated pressure; the exact adjustment range for this variant is not published, and we confirm it on request. An embedded square gauge with a psi scale is fitted for set-point checks, no reverse (check) valve is fitted and no mounting bracket is included. Maximum 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 GFR300 size is one step in a family that spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 in, a choice of drain (differential-pressure, automatic or manual), a 5 um element option (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow data for GFR units is published as curves rather than a single rated figure, so ask us to confirm sizing and the full datasheet for your application.
| Model | GFR300C15MLJF2T 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 conditioning for the gripper and clamp cylinders on a palletising robot: the filter stage strips water and swarf carried in from the ring main, and the low-pressure regulator holds the reduced, stable set pressure the gripper circuit was designed around, read on the psi gauge.
Conditioning the air feeding solenoid-piloted butterfly valves on a treatment skid: particulate and water are removed before the pilots, and the regulator holds the pilot pressure the valve actuators were specified for, with the set point checked on the square gauge.
Air for the reject kickers and cleaning nozzles along a packaging conveyor: the 40 um element protects the nozzles from rust and pipe scale, the manual-drain bowl is emptied at shift end, and the regulator sets the line pressure the nozzles were set up with.
The real choices on a GFR filter regulator are size and port, drain type, filter grade, gauge scale, thread and bracket. This code is the 300 size with a 1/2 in NPT port; step up or down a size if your circuit needs a different port, since each size step carries a larger port and greater capacity. Drain: this unit is manual (code M) - the bowl is emptied by hand, which suits installations that are visited during normal operation; automatic (A) and differential-pressure (blank, the standard) drains are available on the same body if the bowl should be drained without attention. Filter grade: the 40 um standard element is fitted here; specify W for the 5 um option where finer particulate protection is needed. Gauge: the fitted square gauge reads in psi; MPa and bar scales are alternatives, and an external round gauge is also available. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as order options - this code is the NPT version. No mounting bracket is included (code J); brackets are optional on the family. Flow for GFR units 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 GFR flow data as capacity curves rather than a single rated figure, so no one flow number is quoted for this unit. Tell us your line pressure, set pressure and the air consumption of the equipment downstream, and we will confirm the sizing from the datasheet on request.
Code M sets a manual drain: the bowl is emptied by hand, which suits installations that are visited during normal operation. If the unit will sit where it is not easily reached, the same 300-size body is also offered with an automatic drain (code A) or the standard differential-pressure drain (blank) - ask and we will quote the variant.
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.