The AirTAC GFR300C15MLJC2WGK AirTAC Filter Regulator G1/2, 5 um 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 GFR300C15MLJC2WGK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is threaded G1/2 (G/BSPP; PT is the series standard thread, with G and NPT as order options), carries the 5 um filter element (the finer of the two grades; 40 um is standard), drains the metal bowl by hand, and is the low-pressure regulator type. A round psi gauge is fitted, a reverse (check) valve is included, and the unit comes without a mounting bracket. 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 for drain type (differential-pressure, automatic or manual), filter grade (40 um or 5 um), gauge style and scale (MPa, psi or bar), thread (PT, G or NPT), mounting bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures and sizing for your application.
| Model | GFR300C15MLJC2WGK AirTAC Filter Regulator G1/2, 5 um |
|---|---|
| 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) |
Point-of-use air preparation for pneumatic clamps on a machining cell: the 5 um element keeps dirt and water out of the clamp valves while the low-pressure regulator holds a gentle, consistent clamp setting.
Filtered, regulated pilot supply to diaphragm-actuated control valves on a water-treatment skid; the round psi gauge gives a local setpoint readout and the manual drain is emptied during scheduled rounds.
A single-body filter regulator at the air drop feeding cylinders on a cartoning line, with the fitted check valve isolating the downstream circuit and the metal bowl drained by hand at shift change.
Within the GFR300 size you pick the port to match the line - here G1/2 - and step up or down a size (200/300/400/600) when the flow curve requires it. Choose the drain: differential-pressure (the default), automatic, or manual as fitted on this unit, which suits installations where an operator empties the bowl during routine checks. Choose the element grade: 40 um standard or 5 um (code W) as fitted here for finer particulate removal. Gauge options are the embedded square gauge or an external round gauge with MPa, psi or bar scales; this unit carries a round psi gauge. Thread is PT as standard with G and NPT to order, and a bracket is optional (this unit has none, code J). This unit is the low-pressure regulator type (code L); we confirm its adjustment range on request. Because AirTAC publishes flow 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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and the air consumption of the equipment you are feeding, and we will confirm the correct size and the datasheet figures on request.
This unit drains its metal bowl by hand (code M): the operator opens the drain at routine intervals, which suits attended installations. The GFR family also offers an automatic drain (code A) and a differential-pressure drain (the default), so you can match the drain to how the machine is looked after. Filter grade is a separate choice: 40 um standard or 5 um as fitted here (code W).
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.