The AirTAC GFR400C10MLJC3WTK 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 AirTAC GFR400C10MLJC3WTK is a filter regulator: water and particulate removal plus pressure regulation combined in a single 400-size body. This configuration is threaded NPT 3/8 in, carries a 5 um filter element for finer air cleaning than the 40 um standard, and uses a manual drain, so the bowl is emptied by hand as part of routine maintenance. The regulator is the low-pressure type, a round external gauge with a bar scale is fitted, and a reverse/check valve is included. No mounting bracket is supplied with this code, so plan to support it from the connected pipework or a locally sourced 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 is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT as options), bracket and reverse valve. Rated flow is published only as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR400C10MLJC3WTK 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) |
Filtered, regulated air at a low set pressure feeds clamping cylinders that hold workpieces during a fixture-and-fasten cycle, with the 5 um element protecting the valve and cylinder seals from particulate carryover.
A packaging machine's flap-fold and tape-press cylinders run on cleaned, regulated air from this unit, with the manual drain emptied during scheduled line cleaning and the bar gauge giving operators a readable setpoint.
The tool-clamp and unclamp actuators on a machining centre draw from a filtered, regulated branch; the reverse/check valve helps hold the downstream circuit if upstream supply dips, and the 5 um element guards the actuator internals.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with a 3/8 in NPT port, and larger sizes carry larger ports and more flow capacity. Because flow is published as curves rather than a single rated number, ask us to check the curve against your application before ordering. This code fixes several real choices: a 5 um element (finer than the 40 um standard, useful where downstream equipment needs cleaner air), a manual drain (simple and low-cost, but it needs operator attention, unlike the automatic or differential-pressure drain options), a low-pressure regulator type, a round gauge with a bar scale, a fitted reverse/check valve, no bracket, and an NPT thread (PT is the standard thread; G and NPT are catalogue options ordered by code). The exact adjustment range of the low-pressure type is not published, so confirm it with us if your set pressure is critical.
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 only 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 datasheet curve and check the sizing against your demand before you order.
The L code makes this a low-pressure regulator variant rather than the standard type; its exact adjustment range is not published, so confirm it with us if your set pressure is critical. The M code means the bowl is drained by hand, so build bowl-draining into routine maintenance instead of relying on an automatic or differential-pressure drain.
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.