The AirTAC AirTAC GFR30008MLF2G Filter Regulator G1/4 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 PT1/4" 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 GFR30008MLF2G is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has G1/4 (BSPP) ports, a manual drain bowl in polycarbonate, a 40 um standard filter element, and the low-pressure regulator type for applications that run below standard line pressure. An embedded square gauge scaled in psi is fitted so the set pressure is visible at the unit, and a mounting bracket is included for panel or wall fixing. 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 is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and can be ordered with automatic, manual or differential-pressure drains, a 5 um (W) element, alternative gauge scales in MPa or bar, PT or NPT threads, and an optional reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | AirTAC GFR30008MLF2G Filter Regulator G1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 40 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. |
|---|---|
| 08 | Port size PT1/4". 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. |
| (blank) | Filtering grade 40 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a bottling or canning line, this filter regulator conditions the air feeding gripper and placement actuators: the 40 um element strips water and debris that would stick valve spools, and the low-pressure regulator type holds the gentle pressure those pick-and-place motions need.
Bench-top lab automation and sample-handling rigs run on clean, low-pressure air. Mounted on its included bracket near the manifold, this unit filters the shop supply and lets the operator read and adjust the set point directly on the psi-scaled square gauge.
Pneumatic diverter and gate cylinders on sorting conveyors need steady, moisture-free air to change lanes reliably. This G1/4 filter regulator, installed at the drop ahead of the valve bank, cleans the supply and regulates it to the pressure the diverter was designed around.
Start with the port step: the 300 size carries 1/4 in ports here, and the G suffix makes the thread G (BSPP); PT is the catalogue standard and NPT is available to order, so match the thread to your fittings. Because this is the low-pressure (L) regulator type, verify that your set point falls in the low-pressure band before ordering - we will confirm the exact adjustment range from the datasheet on request. Choose the drain to suit access: this unit has a manual drain, which suits positions an operator visits routinely; automatic or differential-pressure drains suit unattended installations. The 40 um element is standard; specify the W code for 5 um where finer particulate removal matters. The fitted square gauge is scaled in psi, and MPa or bar scales plus an external round gauge are alternatives. A bracket is included with this code. Flow for the GFR300 is published as curves, not a single rating, so send us your flow requirement 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 GFR300 as curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Tell us your application's flow requirement and we will confirm the correct size from the datasheet curves on request before you order.
A manual drain means an operator opens the drain at the bowl to release collected water, which suits units mounted where staff already walk regular rounds. If the installation is unattended or hard to reach, order the same GFR300 in the automatic (A) or differential-pressure (blank) drain version instead; the filter grade, gauge and port options stay the same.
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.