The AirTAC GFR30015MLJF2GK AirTAC Filter Regulator G1/2, Low-Pressure 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 PT1/2" 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 GFR30015MLJF2GK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a G1/2 (BSPP) port, a manual drain, the standard 40 um filter element, the low-pressure regulator type, an embedded square gauge reading in psi, and a reverse (check) valve fitted; no mounting bracket is included with this code. The bowl on this 300 size is polycarbonate (PC). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options across the series include automatic and differential-pressure drains, a 5 um element (code W), an external round gauge, and G or NPT threads in place of PT. Flow is published as curves rather than a single rating, so we confirm flow and other datasheet figures on request.
| Model | GFR30015MLJF2GK AirTAC Filter Regulator G1/2, Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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 | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". 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)). |
| L | Low-pressure 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. |
| (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. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding pneumatic clamps and swing cylinders on a machining fixture that runs below standard shop pressure: the regulator holds the set point while the 40 um element keeps scale and pipe debris out of the directional valves.
A point-of-use station on a packaging conveyor: the 1/2 inch port suits the main drop line, the square psi gauge lets operators read the setting at a glance, and the check valve holds the downstream circuit if upstream supply dips.
Installed at the wall drop feeding an assembly cell: filtration and regulation in one body saves a component, and the manual drain lets maintenance purge collected water during scheduled rounds.
Size and port step up together: 200 through 600, with this unit at size 300 on a 1/2 inch G thread. The choices that shape the code are the drain (manual here; automatic and differential-pressure are the alternatives), the element grade (40 um standard, 5 um with code W), the gauge (embedded square is standard, scaled in MPa, psi or bar, with an external round gauge optional) and the thread (PT is the standard; G and NPT are order options). This unit is the low-pressure type and carries a check valve; the mounting bracket is omitted (code 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this family as curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Send us your application details and we will confirm the sizing from the datasheet on request.
Code M in this model specifies a manual drain: condensate collected in the polycarbonate bowl is released by hand, which suits attended installations with scheduled maintenance rounds. The GFR series is also offered with automatic (code A) and differential-pressure (blank) drains if you prefer hands-off water removal.
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.