The AirTAC GFR300C15MLJF2G 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 GFR300C15MLJF2G is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is the size 300 unit with a G1/2 (BSPP) port, a manual-drain metal bowl, the standard 40 um filter element and the low-pressure regulator type. It is fitted with the embedded square gauge scaled in psi, has no reverse/check valve, no mounting bracket, handles a maximum inlet pressure of 1.0 MPa (145 psi), and operates at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR range 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, embedded square or external round gauges with MPa/psi/bar scales, and PT, G or NPT threads. Flow for the series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR300C15MLJF2G 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) |
On a welding or machining fixture whose pneumatic clamps run on a deliberately reduced supply, this unit filters the incoming air and holds the reduced setting. The low-pressure regulator type is intended for circuits set well below full line pressure, and the square psi gauge lets the setter read the clamp pressure directly.
At the air drop feeding a cartoning or wrapping machine, one body removes condensed water and pipe-scale and regulates the supply to the machine's valves and cylinders. The manual drain suits a line where an operator already walks the machine at shift start, and the 40 um element protects the downstream components.
On a robotic pick-and-place cell, gripper actuators need clean air at a steady, gentle pressure so parts are held without distortion. This filter regulator conditions the gripper line at the cell manifold, with the psi-scaled gauge giving the integrator a visible setpoint and the manual drain emptied during scheduled changeovers.
Every choice in this family is decodable from the code. Size 200/300/400/600 sets the port and capacity step, so step up a size when your air demand grows; this unit is size 300 with a 1/2 inch port. Drain type is differential-pressure by default, automatic (A) or manual (M - this unit), so pick manual only where someone can open the drain on a routine. The filter element is 40 um standard or 5 um (W) for finer particulate. The gauge is the embedded square type (this unit, psi scale) or an optional external round gauge in MPa, psi or bar. Thread is PT as the standard, with G (BSPP) and NPT as catalogue order options - this unit is the G version. A bracket can be included or omitted (J = none here). Flow is published as curves, not a single rated figure, so send us your application conditions and we will confirm sizing against 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 for this unit. Send us your line pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet on request before you order.
The M in the code means the metal bowl is drained by hand: someone opens the drain at intervals to let collected water out. The same size 300 filter regulator can be ordered with an automatic drain (A) or the default differential-pressure drain if you do not want to rely on manual attention, while keeping the 40 um element, low-pressure regulator type and psi gauge.
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.