The AirTAC GFR300C15MLJF3WT AirTAC Filter Regulator NPT1/2 5 um 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 GFR300C15MLJF3WT is an AirTAC GFR300 filter regulator: a single body that first removes water and particulate down to 5 um, then regulates the downstream pressure. This configuration is the low-pressure type with a 1/2 in NPT port, a manual drain on the metal bowl, a built-in round gauge scaled in bar, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of PT, G (BSPP) or NPT threads, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, gauge and scale options, and low-pressure variants. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15MLJF3WT AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| 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) |
Conditioning the supply to a carton-forming and sealing line: the 5 um element strips water and fine particulate before the regulator delivers a steady low pressure to the machine's air cylinders and directional valves.
Feeding pop-up divertors and stop gates on a distribution conveyor: filtration and regulation in one body saves panel space, and the manual drain lets maintenance purge accumulated condensate during scheduled rounds.
Supplying pick-and-place modules on a laboratory automation skid where components need clean, low-pressure air; the bar-scaled round gauge gives a local pressure reading at the panel without extra instrumentation.
Size the unit by port and expected flow: the 300 size with a 1/2 in NPT port sits mid-range in the GFR line (200/300/400/600), with larger sizes handling larger ports and more air. This unit carries the W grade (5 um element) instead of the 40 um standard, a manual drain instead of the differential-pressure default (an automatic drain is also available), a round gauge scaled in bar, and NPT threading where PT is the standard and G (BSPP) is the other order option. As a low-pressure type it differs from the standard regulator, and the exact adjustment range is not published - confirm it with us. Flow is published as curves, not a single rated figure, so ask us to check 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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for this unit on request.
This configuration uses a manual drain: condensate collected in the metal bowl is released by operating the drain by hand, which suits installations visited during routine maintenance. Differential-pressure (the family default) and automatic drains are available in the same series if you would rather not rely on manual purging.
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.