The AirTAC GFR40010MLC2G 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 GFR40010MLC2G is a size-400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration has G3/8 (BSPP) ports, a manual drain bowl in polycarbonate, and the standard 40 um filter element. It is the low-pressure regulator type, so it is intended for circuits that hold a reduced, stable pressure below the range a standard unit targets. An external round gauge with a psi scale is fitted so the set pressure can be read directly, and a mounting bracket is included for panel or frame fixing.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of ports, thread types (PT standard; G and NPT as order options), drain types, filter grades and gauge styles, so a matching unit can be specified for most compressed-air lines. Rated flow is published as curves rather than a single figure; ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR40010MLC2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| Series | GFR400 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 — round, 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 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. |
| (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 | GFR400 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Fixture clamps and swing cylinders on an assembly line need air held at a reduced, steady pressure so parts are held firmly without over-clamping. This GFR400 filter regulator cleans the supply and lets the setter dial in the clamp pressure, with the round psi gauge giving a direct readout at the fixture.
Bench-top test rigs and lab apparatus fed from a shop-air main need clean air at a gentle, repeatable pressure. The low-pressure regulator type, 40 um filtration and manual drain suit a supervised bench where the bowl is checked as part of the routine, and the psi gauge makes each test setting easy to reproduce.
Packaging machinery - baggers, sealers, small diverters - often runs actuators at modest pressures where a standard regulator setpoint sits too high for comfortable fine adjustment. This size-400 unit filters the incoming air, holds the circuit at the low working pressure, and its bracket mounts it directly on the machine frame.
Start with the port step: this unit is size 400 with G3/8 ports, and the size you choose should follow the line size and the air demand of the downstream circuit. Choose the drain to suit access: manual drain (this unit) needs someone to open the bowl drain periodically; automatic or differential-pressure drains discharge condensate on their own. Filter grade is 40 um as standard here, with a 5 um element available as code W where finer particulate removal is needed. Gauge options are the embedded square gauge (MPa, psi or bar scales) or an external round gauge - this unit carries the round gauge with a psi scale. Thread is PT as standard, with G (BSPP) and NPT available to order; a mounting bracket can be included or omitted. One honest note on sizing: flow for this series is published as curves, not a single rated number, so ask us to confirm the datasheet figures against your application before ordering.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and the air demand of your equipment and we will confirm the datasheet flow curve and check the sizing against your application on request.
A manual drain means condensate collected in the polycarbonate bowl is released by opening the drain when you service the unit - simple and reliable where the bowl is checked regularly. The L in the code marks the low-pressure regulator type, intended for circuits held at reduced pressures; the exact adjustment range for this low-pressure version is not published in our data, so ask us to confirm it on request.
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.