The AirTAC GFR30010MLF2G AirTAC Filter Regulator G3/8 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 PT3/8" 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 GFR30010MLF2G is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, so one component conditions the air and sets the downstream working pressure. This configuration carries a G3/8 (BSPP) port, a 40 um standard filter element, a manual drain bowl in polycarbonate, and a low-pressure regulator type for circuits that run at reduced regulated pressures. The embedded square gauge is fitted with a psi scale, a mounting bracket is included, and there is no reverse (check) valve in this code. 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 from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge scale options in MPa, psi or bar, and PT, G or NPT threads. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR30010MLF2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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. |
|---|---|
| 10 | Port size PT3/8". 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
A CNC machining cell running air-actuated clamps and vises takes clean, regulated air at a reduced working pressure from this unit, keeping clamp force consistent across the shift while the 40 um element protects the clamp cylinders from particulate.
On a cartoning or case-packing conveyor line, this filter regulator feeds the divert, push and seal cylinders, with the manual drain cleared during changeover so condensate collected in the PC bowl does not carry downstream.
Textile and knitting machinery often runs actuated guides and thread tensioners at reduced pressures; the low-pressure regulator type in this unit sets that gentler working pressure, with the psi gauge giving operators a direct local reading.
Size and port set the capacity: the 300 size with its G3/8 port sits in the middle of the G-series range, and the right step up or down (200/300/400/600) depends on the air demand of the circuit. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering. This unit is the low-pressure regulator type, suited to circuits that hold a reduced regulated pressure; its exact regulation range is not published in the material we hold, so we confirm it on request. The manual drain means an operator opens the bowl drain periodically to remove accumulated condensate - choose automatic or differential-pressure drain codes if you prefer that to happen without attention. The 40 um element is the standard grade; a 5 um element is available under the W code where finer filtration is needed. The fitted square gauge reads in psi; MPa or bar scales are order options. The G (BSPP) thread here is a catalogue option - PT is the standard thread, and NPT is also available to order. A mounting bracket is included with this code.
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 G-series as performance curves rather than a single rated figure, so we do not quote one number. Tell us your inlet pressure and the air demand of your circuit and we will confirm the flow figures from the datasheet for this exact model on request, and check the 300 size against your application before you order.
In this code, M is the manual drain - you open the drain at the bottom of the polycarbonate bowl by hand to expel collected water, which suits lines with scheduled maintenance rounds. F2 is the fitted embedded square gauge with a psi scale; MPa or bar scales are available as order options. If you would rather not drain by hand, automatic and differential-pressure drain versions of the same unit are available.
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.