The AirTAC AirTAC GFR300C08MF2WK Filter Regulator 1/4 in PT 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 AirTAC GFR300C08MF2WK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/4 in PT port, a fine 5 um filter element, a manual drain for emptying collected condensate by hand, an embedded square gauge reading in psi, a built-in reverse (check) valve, and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range for a manual-drain unit is 0.05-0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size in the GFR range.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | AirTAC GFR300C08MF2WK Filter Regulator 1/4 in PT |
|---|---|
| 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 clean, regulated air to the cylinders and actuators on a carton-sealing or wrapping line, with the 5 um element protecting directional valves from water and fine dirt.
Supplying the air cylinders that raise stops and diverters on a bottling or distribution conveyor, with the psi gauge letting line staff set and verify working pressure at a glance.
Regulating supply pressure to pneumatic quarter-turn actuators on a water-treatment or chemical dosing skid, with the check valve holding the set circuit if upstream supply dips.
Start with the port step: this unit is size 300 with a 1/4 in PT port; larger sizes (400, 600) carry larger ports and more flow capacity, so step up if your line needs more air. Choose the drain to match access: manual (this unit) means opening the drain by hand on a routine you set, while automatic and differential-pressure drains discharge condensate without attention. Filter grade is 40 um standard or 5 um fine (this unit is W, 5 um) where downstream equipment needs cleaner air. Gauge options are an embedded square gauge (fitted here, psi scale) or an external round gauge, with MPa, psi or bar scales. Thread is PT as standard; G (BSPP) and NPT are order options. Brackets are included unless coded J. Because flow is published as curves rather than a single rating, 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm the flow data from the datasheet and check the sizing for your application on request.
The M in the code selects a manual drain: condensate collected in the bowl is emptied by opening the drain valve by hand on a maintenance routine you set. It suits positions that are visited regularly. If the unit will be hard to reach, the same GFR300 body is available with an automatic or differential-pressure drain instead.
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.