The AirTAC GFR300C15MLF2WG 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 AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single body. This unit is built on the size 300 frame with a G1/2 (BSPP) port, a 5 um filter element for finer cleaning than the standard 40 um grade, a manual drain for controlled bowl blow-down, and a metal bowl. The regulator is the low-pressure type, suited to circuits that hold a reduced downstream setting, and it carries an embedded square gauge reading in psi. A mounting bracket is included; no reverse (check) valve is fitted.
This is a genuine AirTAC part from the G-series filter-regulator line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch and thread options in PT, G (BSPP) and NPT. Drain type, filter grade, gauge scale and bracket choices can be specified per model. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15MLF2WG 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) |
On a packaging line, the sealing jaws need a steady, reduced air setting held independent of the main header. This low-pressure filter regulator cleans the supply to 5 um to protect the seal cylinder's valve, and the manual drain lets an operator clear condensate during the scheduled changeover check.
Analytical instruments and sample-prep benches on compressed air need clean, gently regulated supply rather than full header pressure. The 5 um element keeps fine debris out of sensitive pneumatics, the psi-scaled square gauge gives a direct reading at the bench, and the metal bowl suits a supervised lab environment.
Atomizing air to spray nozzles on a finishing line is set well below header pressure and must stay clean to avoid nozzle fouling. This unit filters to 5 um ahead of the nozzle feed, holds the reduced setting via the low-pressure regulator, and the included bracket allows compact mounting at the booth manifold.
Match the size and port to the air demand of the downstream circuit: this unit is size 300 with a G1/2 port, and larger sizes carry larger ports and more flow. AirTAC publishes flow as curves rather than a single rating, so ask us to confirm sizing against your application before ordering. This configuration is fixed as: low-pressure regulator type, 5 um element (the 40 um standard grade is available on other codes), manual drain, metal bowl, square gauge with psi scale, bracket included, and no check valve. The thread here is G (BSPP); PT and NPT versions can be ordered, and MPa or bar gauge scales are available elsewhere in the series.
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 filter-regulator flow as curves rather than a single rated figure, so no single number is quoted here. Send us your inlet pressure and air demand and we will confirm the datasheet curve values for this exact model on request.
A manual drain means an operator opens the drain to release collected condensate, which suits installations inspected on a routine schedule. If you prefer unattended draining, the GFR300 series is also available with automatic or differential-pressure drains on other codes.
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.