The AirTAC AirTAC GFR30015MLC2WGK Filter Regulator G1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 5 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 AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single filter-regulator body, and this configuration, GFR30015MLC2WGK, is built for low-pressure circuits. It carries a G1/2 (BSPP) port, a 5 um filter element (code W) for finer cleaning than the standard 40 um grade, a manual drain on the bowl, a reverse/check valve (code K), and a round pressure gauge reading in psi. The bowl on this size 300 unit is PC (polycarbonate). Maximum working (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 is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and with choices of drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT are order options), bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us to confirm the figures and the datasheet for your application before ordering.
| Model | AirTAC GFR30015MLC2WGK Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 5 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 — round, 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
On a beverage filling line, this filter-regulator cleans the compressed air to 5 um and holds a low, stable supply pressure to the grippers and pusher cylinders that place and release bottles, with the psi gauge giving operators a visible setpoint.
In a machining cell, the unit filters chips of water and fine particulate out of the air feeding pneumatic clamps on a fixture, and its low-pressure regulation keeps clamp force gentle and repeatable on finished surfaces.
On a parcel-sorting conveyor, the GFR300-15G supplies filtered, low-pressure air to the diverter and stopper cylinders, with the manual drain letting maintenance bleed accumulated water from the bowl during scheduled rounds.
Size 300 with a G1/2 port suits lines whose pipe and fittings are already at 1/2 inch; step up to size 400 or 600, or down to 200, as your circuit demands. This unit is the low-pressure type (code L), so confirm the setting range you need with us before ordering - the exact low-pressure range is not published in the material we hold. The 5 um element (W) is the right choice where downstream valves and instruments want cleaner air than the 40 um standard; the manual drain means an operator bleeds the bowl rather than relying on an automatic or differential-pressure drain. The round gauge here reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is G (BSPP) on this code, with PT standard and NPT available to order, and the mounting bracket is included. Because flow is published as curves rather than one rated figure, send us your application details and we will confirm sizing against the datasheet.
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 series as curves, not as a single rated number, so we do not quote a figure here. Send us your application details and we will confirm the flow from the datasheet and check the sizing against your line before you order.
The M in the code selects the manual drain: an operator opens the bowl drain to remove collected water, instead of the automatic or differential-pressure drain options. The W selects the 5 um filter element, one grade finer than the 40 um standard, for cleaner air to sensitive valves and instruments.
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.