The AirTAC GFR300C15MLJC2GK 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 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 GFR300C15MLJC2GK is a GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This configuration carries a G1/2 (BSPP) port, a metal bowl with a manual drain, a 40 um standard filter element, a low-pressure regulator, an external round gauge reading in psi, and a built-in reverse (check) valve. It is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family runs from size 200 to size 600 with ports from 1/8 to 1 inch, and offers drain, filter-grade, gauge, thread and bracket choices so a unit can be matched to the line it feeds. Flow is published as curves rather than a single rated figure; we confirm flow and other datasheet values for your application on request.
| Model | GFR300C15MLJC2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Conditioning and low-pressure regulation of the air feeding a pneumatic press circuit, where the ram is held below standard supply pressure and the built-in check valve blocks backflow toward the supply side.
Filtered, regulated air for the cylinders and air jets on a packaging conveyor line, with the manual-drain bowl emptied during scheduled line changeovers.
Point-of-use conditioning on a laboratory compressed-air loop, where the 40 um element and a psi-scale gauge give clean, readable supply to bench apparatus.
Size and port set the air capacity: this unit is size 300 with a G1/2 port, one step up from 3/8 and below 3/4. Drain choice matters: this bowl is manual, so condensate is drained by hand, while automatic and differential-pressure drains suit unmanned installations. The 40 um element is the standard grade; a 5 um element (code W) is available where finer filtration is needed. The round gauge here reads in psi; the embedded square gauge and MPa or bar scales are the other catalogue options. PT is the standard thread for the series, with G (this unit) and NPT as order options, and a bracket can be added where the unit will be panel-mounted. Flow is published 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 no rated flow number applies to this unit. Tell us your line pressure and air demand and we will confirm the flow from the datasheet for this exact configuration before you order.
This unit's metal bowl uses a manual drain: condensate is released by hand, which suits lines that are visited daily or serviced on a fixed schedule. Where the installation runs unattended, the same series offers automatic and differential-pressure drains 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.