The AirTAC GFR40010MLJF1WTK AirTAC Filter Regulator NPT 3/8 in is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400 series combines water and particulate filtration with pressure regulation in a single body: air passes a replaceable element and a drain bowl, then through an integrated reducing valve, so one 3/8 in unit does both jobs. This configuration is the size 400 body with NPT3/8 ports, a fine 5 um element (the standard grade is 40 um; W selects 5 um), a manual drain you open during scheduled checks to clear collected condensate, the low-pressure regulator type, an embedded square pressure gauge reading in MPa, and a built-in reverse-flow check valve. No mounting bracket is included. 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 filter-regulator family spans sizes 200, 300, 400 and 600 with matching port sizes, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, MPa, psi or bar gauge scales, and PT (standard), G or NPT threads. Bowl material on this size is PC (polycarbonate). AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR40010MLJF1WTK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding a compact pneumatic press station, this filter regulator cleans the shop air to 5 um, holds a steady downstream pressure for consistent press stroke, and its manual drain is emptied during scheduled line checks.
Mounted at the cell drop feeding gripper valves and actuators, the 5 um element protects fine valve seals from particulate and rust, while the built-in check valve blocks backflow toward the upstream side.
Installed ahead of a tool-change circuit, the unit removes water and fine particles before the directional valves, the square MPa gauge gives the setter a direct pressure readout, and the manual drain is opened at weekly maintenance.
Start with the port step: this is the size 400 body with 3/8 in NPT ports; step up or down through sizes 200 to 600 as your line's flow demand and piping change. Choose the drain to match maintenance habits: manual (this unit) is emptied by hand at scheduled checks, automatic drains continuously, and the differential-pressure default drains on a pressure drop. Choose the 5 um element (code W) when downstream valves and cylinders need finer protection than the 40 um standard. The embedded square gauge here reads in MPa; psi or bar scales and an external round gauge are options. Thread is NPT on this unit; PT is the catalogue standard and G is also available to order. Brackets are optional (this code omits the bracket). One honest routing note: AirTAC publishes flow for this series only 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR400 series as performance curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Tell us your application and line pressure and we will confirm the flow and datasheet figures for you on request before you order.
L marks the low-pressure regulator type, intended where the regulated downstream pressure sits below what the standard type is set for; the exact adjustment range for this variant is not published in the material we hold, so confirm it with us. M is the manual drain: instead of draining automatically, you open the bowl drain by hand during scheduled maintenance to remove collected condensate.
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.