The AirTAC GFR300C08MLNT AirTAC Filter Regulator NPT1/4 Low-Pressure 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 GFR300C08MLNT is an AirTAC GFR-series filter regulator: water-and-particulate filtration and pressure regulation combined in one body, so a single size 300 unit both cleans the compressed air and holds the downstream working pressure. This configuration has a 1/4 in NPT port, a manual drain under the polycarbonate (PC) bowl, the standard 40 um filter element, and the low-pressure regulator type for circuits that operate at reduced set pressures. No gauge is fitted (code N) and no reverse/check valve is fitted; a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um standard or 5 um (W) elements, optional gauges, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C08MLNT AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Filter and regulate the plant air feeding the clamp and sealing cylinders on a carton packaging line, holding a reduced low-pressure setting for delicate forming motions while the 40 um element keeps debris out of the directional valves.
Condition the air acting the divert gates and stoppers along a sortation conveyor: the filter strips water and particles before the valves, and the regulator holds the gate cylinders at a steady reduced pressure.
Provide clean, regulated air to a laboratory test bench or pilot rig where instruments and small actuators run at low pressure; the manual drain suits intermittent, supervised use with routine hand draining.
The real choices in this family are decodable from the code. Step through sizes 200, 300, 400 and 600 (ports 1/8 in to 1 in) to match the pipe and the flow your line needs. Choose the drain: manual as on this model, automatic, or the differential-pressure default. Choose the element: 40 um standard, or 5 um with code W for finer protection. Gauges are optional - embedded square or external round, with MPa, psi or bar scales - and this unit is supplied without one (code N). The thread here is NPT; PT is the standard and G (BSPP) is also available to order. A mounting bracket is included. 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 GFR series as curves, not as a single rated figure, so there is no one number we can honestly quote. Tell us your operating pressure and required flow and we will confirm the sizing from the datasheet on request.
The N in the code means no pressure gauge is fitted; gauges are optional in this family and can be specified with MPa, psi or bar scales. The M means a manual drain: condensate collects in the bowl and you drain it by hand at intervals, rather than relying on an automatic or differential-pressure drain.
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.