The AirTAC GFR400C10MLJC2WTK AirTAC Filter Regulator NPT3/8 5 um 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 GFR400C10MLJC2WTK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration carries a 3/8 in NPT port, a fine 5 um filter element (code W), a manual drain bowl in metal, and the low-pressure regulator type. It is fitted with an external round gauge reading in psi, a reverse (check) valve, and no mounting bracket. Maximum working (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 published in sizes 200, 300, 400 and 600, with a choice of port sizes, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um standard or 5 um fine filtration, gauge style and scale options, and bracket choices. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request.
| Model | GFR400C10MLJC2WTK AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| 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) |
Regulates atomizing air to spray guns in a paint or coating line where setpoints sit well below standard regulator territory. The 5 um element keeps oil and particulate out of the gun nozzles, and the manual drain lets an operator clear condensate at shift checks.
Supplies filtered, gently regulated air to sealing bars and low-pressure actuation circuits on a wrapping or bagging line, with the psi gauge giving operators a readable setpoint at the machine and the check valve holding the circuit if upstream pressure dips.
Filters and regulates supply air to pneumatic clamps and workholding fixtures that run at reduced pressure, protecting valve seals and cylinder cups from water and fine contamination while the round gauge lets a setter verify clamp pressure in psi.
Step up or down through the GFR sizes (200/300/400/600) to match the port and the flow your line needs; this unit is the size 400 step with a 3/8 in NPT port. Drain choice matters: manual drain (this unit) means an operator opens the bowl drain during checks, while automatic and differential-pressure drains handle condensate without attention. Filter grade is a real decision: 40 um is the standard element and 5 um (this unit, code W) is the fine option for sensitive downstream equipment. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this unit has a round psi gauge. Thread is PT as standard with G and NPT as catalogue options; this unit is ordered in NPT. Brackets are optional (this unit has none), and the K code adds a reverse/check valve. One honest note on sizing: 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 l/min, m3/h or SCFM number. Send us your application details and we will confirm the flow and the full datasheet figures for this exact model on request.
Manual drain means condensate is released by opening the drain fitting by hand during routine checks, rather than by an automatic or differential-pressure mechanism. The low-pressure type is the regulator variant intended for reduced setpoints; the exact adjustment range for this variant is not published in our data, so we confirm it on request before you order.
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.