The AirTAC GFR30008MJF2WG AirTAC Filter Regulator G1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MJF2WG is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration has a G1/4 (BSPP) port, the finer 5 um filter element (code W, versus the 40 um standard), a manual drain on the polycarbonate bowl, an embedded square gauge reading in psi, and no mounting bracket. It is the standard regulator type with no reverse/check valve fitted.
This is a genuine AirTAC part from the GFR300 size in the G-series range, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi), the set pressure range is 0.05-0.9 MPa (7-130 psi), and the operating temperature is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm sizing and the datasheet for your application.
| Model | GFR30008MJF2WG AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding spray guns on a finishing line: the 5 um element strips water and fine particles before they reach the finish, while the regulator holds the gun supply at the set pressure.
Supplying a bench press cylinder with clean air held at a stable set pressure, so forming and staking operations stay repeatable shift after shift.
Conditioning the air feeding pick-and-place cylinders and diverters on a bottling or cartoning line, with the manual drain cleared during scheduled stops.
The decodable choices in this family are size and port (200/300/400/600, 1/8 to 1 inch, stepped against required flow), drain type (differential-pressure, automatic or manual - this unit is manual, so the bowl is drained by hand when needed), filter grade (40 um standard or 5 um with W - this unit carries the 5 um element for finer protection of downstream equipment), gauge scale (MPa, psi or bar), thread (PT is the standard; G or NPT are order options) and bracket. Flow is published as curves, not a single rated figure, 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 this series as curves rather than a single rated figure, so no single number can be quoted here. Tell us your application and we will confirm the flow and send the datasheet so you can size the unit correctly before ordering.
This unit has the M drain code: collected condensate is emptied by hand from the polycarbonate bowl rather than discharged automatically. It suits installations that are checked on a regular schedule; if unattended drainage is needed, the differential-pressure or automatic drain variants of the same GFR300 size are the alternatives to compare.
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.