The AirTAC GFR30008MJC2G AirTAC Filter Regulator G1/4 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 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 GFR30008MJC2G is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body, so a single unit removes water and particulate from compressed air and holds a steady downstream pressure. This configuration has G1/4 (BSPP) ports, a manual-drain polycarbonate bowl, a 40 um standard filter element, a round gauge reading in psi, no mounting bracket and no check valve. As a manual-drain unit it adjusts across the full 0.05-0.9 MPa (7-130 psi) range.
It is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, an optional 5 um element (code W), automatic or differential-pressure drains, embedded square or external round gauges in MPa, psi or bar scales, and G or NPT thread options to order. Rated for up to 1.0 MPa (145 psi) inlet and -5 to 70 C operation, non-freezing. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR30008MJC2G AirTAC Filter Regulator G1/4 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 40 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 — round, 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Filtered, regulated air at the point of use keeps tool-change cylinders and clamping fixtures on a machining centre cycling at a steady, clean pressure.
On a carton-sealing or wrapping line, clean air at a set pressure keeps sealing jaws and pick-and-place actuators working consistently through the shift.
Air cylinders that divert cartons on a distribution conveyor need particulate-free air at a fixed setting, which this filter regulator supplies at each drop.
The first choice is size and port: 300 sits mid-range with a 1/4 in port, so step up to 400 or 600, or down to 200, according to the flow your line needs. Drain type matters: this unit has a manual drain you open by hand, while automatic (code A) and differential-pressure (blank) drains discharge condensate without attention. The 40 um element is standard; specify W for the 5 um grade. The round psi gauge is fitted here; embedded square gauges and MPa or bar scales are the alternatives. Thread is G (BSPP) on this unit, with PT as the standard and G/NPT as order options, and the J code means no bracket is supplied. Because flow is published as curves rather than a single rated figure, 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 as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and required flow and we will confirm from the datasheet whether this 1/4 in unit suits your application.
The M in the code means the polycarbonate bowl drains by hand, which suits installations someone already checks daily. If you want condensate removed without attention, the same GFR300 is available with an automatic (A) or differential-pressure (blank) drain - just ask for that variant.
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.