The AirTAC GFR400C10MLJC2TK AirTAC Filter Regulator NPT 3/8 in 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 GFR400C10MLJC2TK is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in a single body. This size 400 unit is threaded 3/8 in NPT and is built as the low-pressure regulator type. It carries a manual-drain bowl, a standard 40 um filter element, an external round gauge scaled in psi, and a built-in reverse (check) valve; it is supplied without a mounting bracket. 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 spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge style and scale (MPa, psi or bar), G or NPT threads, brackets and a reverse valve. On size 400 the bowl is polycarbonate; only size 600 uses an aluminium alloy bowl. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10MLJC2TK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
Clean, regulated air feeding the clamp and pusher cylinders on an end-of-line case sealer, where the manual drain is bled during shift start-up and the psi gauge gives operators a visible set point.
Air preparation for the gripper circuit of a pick-and-place cell on an assembly line, with the check valve holding the circuit's setting against back-flow and the 40 um element protecting the gripper valves.
Point-of-use preparation ahead of spray guns in a finishing booth, where the low-pressure regulator type, psi gauge and water/particulate removal suit gun air at modest set points.
The decodable choices are the real levers here. Size 400 with a 3/8 in NPT port sits in the middle of the GFR range; step up or down a size when your line port or air demand calls for it. Drain type matters day to day: this build has a manual drain, which you bleed by hand on a schedule, while automatic and differential-pressure drains are available in the family if you cannot rely on someone opening the valve. Filtration is the standard 40 um element; specify 5 um (code W) if downstream equipment needs finer prep. The gauge on this unit is the external round type scaled in psi; the embedded square gauge is the standard fitting, with MPa, psi or bar scales to choose from. Thread is NPT here - PT is the standard catalogue thread and G (BSPP) is also an order option. No bracket is fitted; brackets are optional. Flow is published as curves, not a single rating, so 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 this family as curves, not as 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 so you can size the unit against your demand before ordering.
This build has a manual drain: the bowl is bled by hand, so it suits stations that are visited regularly. If nobody will be at the unit to drain it, the GFR family also offers automatic and differential-pressure drains as decodable options - tell us which fits your maintenance routine and we will confirm the equivalent configuration.
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.