The AirTAC GFR400C10MLF2TK AirTAC Filter Regulator 3/8 NPT 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 GFR400C10MLF2TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is threaded NPT3/8 (3/8 in), carries the standard 40 um filter element, a manual drain on the metal bowl, a low-pressure regulator, an embedded square gauge scaled in psi, a reverse/check valve, and a mounting bracket.
It is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with port sizes from 1/8 to 1 in, optional 5 um filtration (code W), automatic or differential-pressure drains, alternative gauge scales, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm the figures from the datasheet for your application.
| Model | GFR400C10MLF2TK AirTAC Filter Regulator 3/8 NPT |
|---|---|
| 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) |
Filtering and regulating supply air to clamp cylinders on a robotic welding fixture, where the low-pressure regulator holds a gentle clamp pressure and the 40 um element keeps debris out of the valves.
A point-of-use filter regulator ahead of tool-change and chip-blow-off circuits on a CNC machining centre, with the square psi gauge giving operators a local pressure readout at the machine.
Supplying spray guns on a paint finishing line, where clean air and a lower regulated pressure are set at each gun station and the manual drain is emptied during shift changeover.
Size and port set the flow path: this unit is size 400 with a 3/8 in NPT port, and you step up or down a size when your line needs more or less flow. The manual drain means the bowl is emptied by hand - choose the automatic or differential-pressure drain codes where frequent draining is impractical. The 40 um element is standard; specify W for 5 um filtration. The embedded square gauge reads in psi, with MPa or bar scales and an external round gauge available as options. G (BSPP) and NPT threads are order options against the PT standard, and the bracket is included with this code. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering; the exact adjustment range of the low-pressure regulator variant is likewise confirmed on request.
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 rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow figures from the datasheet on request.
It marks the low-pressure type of regulator. The exact adjustment range for this variant is not published in the standard tables, so we confirm it on request. The unit otherwise keeps the size 400 body, NPT3/8 port, 40 um element, manual drain, metal bowl and square psi gauge decoded from this code.
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.