The AirTAC GFR300C08MF2WT AirTAC Filter Regulator 1/4 in NPT, 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 GFR300C08MF2WT is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds a set downstream pressure in one body. This size 300 unit is threaded 1/4 in NPT, carries the 5 um filter element (the finer of the two catalogue grades), drains by hand through its manual drain, and shows the set pressure on the fitted square gauge scaled in psi. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C, non-freezing. The bowl at size 300 is polycarbonate (PC), and 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, and can be ordered with the 40 um standard element instead of 5 um, with automatic or differential-pressure draining instead of manual, with an external round gauge in MPa, psi or bar scales, and with G (BSPP) or NPT threads in place of the PT standard. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300C08MF2WT AirTAC Filter Regulator 1/4 in NPT, 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. |
|---|---|
| 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 tool-clamp and chip-blow-off circuits on a CNC machining centre: the 5 um element catches pipe scale and condensed water ahead of sensitive valves, while the regulator holds the clamp pressure the fixture was set up with.
Supplying gripper and pusher cylinders on a bottling line: filtered, regulated air at a fixed setpoint keeps reject gates and timing screws repeating stroke for stroke through the shift, with the psi gauge giving operators a readable setting.
Conditioning the air feeding pick-and-place valves on a laboratory automation skid or analytical instrument enclosure: clean, regulated supply air with a documented setpoint readable off the square gauge for validation records.
Size and port step up together across the GFR range - 200, 300, 400 and 600, with ports from 1/8 in to 1 in - so choose the size whose flow curve covers your demand with margin; this unit sits at size 300 with a 1/4 in NPT port. Drain type is a real choice on this family: this configuration is manual drain, while automatic and the differential-pressure default suit points you cannot service on a schedule. Filter grade is 40 um as standard with 5 um (code W) as the finer option - this unit carries the 5 um element. The embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales; this one reads psi. Thread is PT as the catalogue standard with G (BSPP) and NPT as order options - this unit is NPT. A mounting bracket is included here and can be deleted with the J code. AirTAC publishes flow for this series 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 rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure and the flow your application needs, and we will confirm the sizing from the datasheet on request.
This unit drains by hand: open the drain to expel collected water and dirt as part of routine checks. The same series is also available with an automatic drain or the differential-pressure default, which suit points where scheduled draining cannot be relied on.
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.