The AirTAC GFR400C10MLF2G 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 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.
GFR400C10MLF2G is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This configuration is the size 400 unit with a G3/8 (BSPP) port, a manual drain, the standard 40 um filter element, the low-pressure regulator type, and an embedded square gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and a mounting bracket is included; the bowl on size 400 units is polycarbonate (size 600 uses aluminium alloy).
This is a genuine AirTAC part. The GFR family runs from size 200 to 600 with ports from 1/8 to 1 inch, a choice of manual, automatic or differential-pressure drain, a 5 um element option (code W), gauge scales in MPa, psi or bar, and PT as the standard thread with G and NPT available to order. Flow is published as curves rather than a single rating, and the exact adjustment range of the low-pressure type is not published in the material we hold, so ask us to confirm both for your application.
| Model | GFR400C10MLF2G AirTAC Filter Regulator G3/8, Low-Pressure |
|---|---|
| Series | GFR400 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 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 | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Filtered, low-pressure regulated air for clamp cylinders on an assembly line, where full line pressure would overload the tooling; the embedded square psi gauge gives operators a direct setpoint readout at the station.
A bench-mounted supply point for test rigs running at reduced pressure: the 40 um element keeps particles and condensed water out of the rig, and the manual drain lets the technician clear the bowl between runs.
Air knives and blow-off nozzles on a packaging line that run below standard regulator settings: the low-pressure type handles the reduced band while the filter section protects the nozzles from water and debris.
Start with the port step: size 400 carries a 3/8 port, and the GFR range steps 200/300/400/600 from 1/8 to 1 inch, so choose the size whose flow curve covers your demand rather than upsizing blindly. Drain is a real choice on this family: manual (this unit, code M) needs an operator to drain the bowl, automatic (code A) drains as water collects, and the differential-pressure default drains only when element loading justifies it. Filter grade is 40 um standard here; specify W for the 5 um element when downstream equipment needs finer filtration. The gauge on this unit is the embedded square type reading in psi; MPa and bar scales and an external round gauge are options. Thread is G (BSPP) on this code - PT is the catalogue standard, with G and NPT as order options - and a mounting bracket is included.
Two honest routing points before you order: the regulator here is the low-pressure type, and its exact adjustment range is not published in the material we hold, so confirm it with us. Flow itself is published as curves, not a single rating - ask us to confirm sizing 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 GFR400 as curves, not as a single rated figure, so we do not quote a number here. Send us your working pressure and air consumption and we will confirm the flow from the datasheet for this exact G3/8 configuration before you order.
Code M means the bowl is drained by hand: an operator opens the drain at intervals to release collected water. If you would rather not rely on manual draining, the same GFR400 body is available with automatic drain (code A) or the differential-pressure default - ask us to quote the variant.
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.