The AirTAC GFR300C08MF2 AirTAC Filter Regulator 1/4in, Square Psi Gauge 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 GFR300C08MF2 is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in a single body. This unit is threaded PT1/4 (1/4 in), filters to 40 um, empties through a manual drain, and shows the set pressure on the embedded square gauge scaled in psi. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. GFR300 is one of four sizes (200/300/400/600) with port choices from 1/8 to 1 in and PT, G or NPT threads; options across the series include a 5 um filter element (code W), automatic or differential-pressure drain, and an external round gauge. Rated flow is published as curves rather than a single figure, so ask us to confirm sizing against your application and we will send the datasheet.
| Model | GFR300C08MF2 AirTAC Filter Regulator 1/4in, Square Psi Gauge |
|---|---|
| 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) |
Feeding gate cylinders and reject actuators on a bottling line: the 40 um element strips water and debris before they reach the valves, while the regulator holds a steady pressure so fill and capping sequences repeat identically.
Supplying stopper and gate cylinders along a conveyor system. The manual-drain bowl is emptied during shift checks, and the square psi gauge lets line staff verify the set pressure at a glance.
Regulating clamp cylinders on a CNC fixture circuit: clean, moisture-reduced air at a fixed pressure keeps clamping force consistent part after part, with the psi gauge confirming the setpoint.
Choose the size by port and flow: GFR300 carries PT1/4 here, with sizes 200/400/600 stepping the port and flow capacity down or up. Drain type is a real decision: this code has a manual drain, which you open periodically to empty the bowl; automatic and differential-pressure drain versions exist if the unit sits where nobody passes regularly. Filtration is 40 um standard; specify 5 um (code W) for finer protection. The square gauge on this unit reads psi, with MPa and bar scales and an external round gauge as order options. Thread is PT as standard, with G (BSPP) and NPT as order options, and a mounting bracket is included. Flow is published as curves, not a single rating, so ask us to confirm sizing against the 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, not a single rated number, so we do not quote a figure here. Ask us for the datasheet and we will confirm the flow at your working pressure and help size the unit against your application.
The bowl collects the water and particles filtered out of the air, and with this code you open the drain by hand to empty it - a quick task during normal maintenance rounds. If the unit is installed where nobody passes regularly, automatic or differential-pressure drain versions are available in the same size.
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.