The AirTAC GFR300C15MLJC2G 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 GFR300C15MLJC2G is a GFR-series filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at a set point. This configuration is the GFR300 size with G1/2 (BSPP) ports, a manual-drain metal bowl, the 40 um standard filter element, and the low-pressure regulator type for circuits that run at reduced set points. A round external gauge with a psi scale is fitted so the setting can be read directly, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating 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, drain choices (differential-pressure, automatic or manual), an optional 5 um element (code W), gauge and scale choices, and G or NPT thread options to order. Flow is published as curves rather than a single rating, so ask us to confirm sizing from the datasheet against your application before ordering.
| Model | GFR300C15MLJC2G 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) |
Feeds paint spray guns on a finishing line: the 40 um element strips water and pipe scale that cause finish defects, while the low-pressure regulator holds a gentle, repeatable atomising pressure at the gun manifold.
Conditions air on a pilot skid where delicate pneumatic valves and actuators need clean air held at a low, stable set point; the round psi gauge lets technicians verify the setting at a glance.
Supplies filtered, regulated air to the cylinders and ejectors that sort, press and divert packs on a conveyor line; the manual-drain metal bowl is emptied during scheduled shift changeovers.
Pick the size by port and flow: this unit is GFR300 with G1/2 ports; smaller sizes (200) carry less flow and larger sizes (400, 600) more. Drain is manual here - the metal bowl is emptied by hand - while automatic and differential-pressure drains suit unattended installations. The element is the 40 um standard; specify code W for 5 um where finer filtration is needed. The fitted gauge is the external round type with a psi scale; the embedded square gauge is the standard fitting and MPa or bar scales can be ordered. Thread is G (BSPP) on this unit; PT is the standard thread and G or NPT are catalogue options to order. No mounting bracket is fitted (code J); choose the bracket version if you need to secure the unit. Because flow is published as curves rather than a single rating, send us your flow and pressure requirements and we will confirm sizing from the datasheet before you order.
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, not as a single rated figure, so we do not quote a number here. Send us your downstream flow and working pressure and we will confirm from the GFR300 datasheet whether this 1/2 in unit suits your application.
This unit carries the M code: the metal bowl is drained by hand, which suits lines that are attended daily. If the unit will sit where draining is awkward, the GFR300 is also available with automatic or differential-pressure drains - tell us when ordering and we will quote the right 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.