The AirTAC GFR30015MLF2WG AirTAC Low-Pressure Filter Regulator G1/2 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 body. This GFR30015MLF2WG is the 300-size unit with a G1/2 (BSPP) port, a 5 um filter element (the finer W grade, versus the 40 um standard), a manual drain for supervised bowl draining, the low-pressure regulator type for circuits that run below standard supply settings, an embedded square gauge reading in psi, and the mounting bracket included. The polycarbonate bowl lets you see condensate at a glance, 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), 40 um or 5 um elements, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR30015MLF2WG AirTAC Low-Pressure Filter Regulator G1/2 |
|---|---|
| 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 — square, psi 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. 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). |
| F | Gauge shape: Square. 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding tool-clamp and chip-clearing actuators on a machining center: the 5 um element keeps fine debris out of the clamping valve, the low-pressure regulator holds a reduced setting, and the psi gauge gives the operator a direct read.
Supplying diverter and pusher cylinders on a packaging conveyor where the circuit runs at a reduced pressure; the manual drain suits a line checked at shift start, and the psi gauge matches the US gauges already on the line.
Point-of-use conditioning for a lab pneumatic test rig: the fine 5 um filtration protects sensitive instruments, the low-pressure type regulates gently for test pressures below standard supply, and the bracket mounts the unit to the rig frame.
Size and port: the GFR300 sits in the middle of the range (200/300/400/600); step up or down a size if your line needs more or less capacity - the 15 code gives this unit its 1/2 inch port. Drain: this model is manual, so the bowl is drained by hand on a maintenance schedule; choose automatic or differential-pressure drain if the unit is hard to reach. Filtration: the 5 um (W) element protects sensitive valves and instruments; 40 um is the standard grade for general supply. Gauge: the embedded square gauge here reads psi; MPa and bar scales and an external round gauge are options. Thread: PT is the standard; G and NPT are order options. Bracket included. Because rated flow is published as curves rather than a single figure, send us your application and we will confirm sizing 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 this series as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and the flow your application needs, and we will confirm the sizing and datasheet figures on request.
Manual drain means an operator opens the bowl drain by hand on a schedule, which suits units that are easy to reach. The same GFR300 size is also available with automatic or differential-pressure drain - just ask us for the equivalent code.
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.