The AirTAC GFR300C08MLC2K AirTAC Filter Regulator PT1/4 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 GFR300C08MLC2K is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built for low-pressure circuits, with a PT1/4 (1/4 in) port, the standard 40 um filter element, a manual-drain polycarbonate bowl, a round gauge scaled in psi, and a reverse/check valve fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. 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 to 1 in, and options that include automatic, manual or differential-pressure drains, a finer 5 um (W) element, embedded square or external round gauges scaled in MPa, psi or bar, G (BSPP) or NPT thread variants, and bracket choices. Because flow is published as curves rather than a single rating, we confirm datasheet and sizing figures for your application on request.
| Model | GFR300C08MLC2K AirTAC Filter Regulator PT1/4 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) |
On a carton-sealing or case-packing line, the unit conditions the supply air and holds a low, stable setting for clamping and hold-down cylinders that must not crush the product, with the psi gauge giving operators a direct readout at the station.
Bench-top test stands running low-pressure pneumatic circuits use the filter section to strip water and particles before sensitive instruments, while the low-pressure regulator dials in gentle test pressures that a standard regulator cannot hold accurately.
At a bottling plant, the unit feeds low-pressure air to conveyor guide-rail cylinders and reject pushers, and the manual drain lets maintenance clear accumulated water from the bowl during scheduled rounds.
Every choice on this unit is decodable from the code. Size 300 with the PT1/4 port sets the connection point for your air line. The M code is the manual drain: an operator opens the bowl drain during maintenance rounds instead of relying on an automatic (A) or differential-pressure (standard, blank) drain. The element is the standard 40 um grade for general water and particle removal, with the 5 um W option available where finer filtration is needed. The L code marks the low-pressure regulator type, so the exact set-pressure range should be confirmed against the datasheet for your circuit. The gauge fitted here is the round type scaled in psi; the embedded square gauge with MPa or bar scales is the alternative. Thread is PT as standard, with G (BSPP) and NPT as order options, and the bracket is included. Flow is published as curves, not a single rated figure, so send us your flow and pressure requirements 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.
Flow for the GFR300 series is published as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm sizing from the AirTAC datasheet on request.
The bowl collects the water separated from the compressed air. With the M code you open the drain by hand during maintenance rounds. If you would rather not drain manually, automatic (A) and differential-pressure (standard, blank) drain versions are available in the same family.
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.