The AirTAC GFR400C10ALJNWTK AirTAC Filter Regulator NPT3/8 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 GFR400C10ALJNWTK is a size-400 GFR filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate down to 5 um (the fine W grade, against the 40 um standard) and regulates downstream pressure as a low-pressure type. This configuration is built with NPT3/8 (3/8 in) ports, an automatic drain that discharges collected condensate from the metal bowl without manual attention, a reverse (check) valve, no gauge fitted and no mounting bracket. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). As a low-pressure type, its exact adjustment range is not published in our data - we confirm it on request.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge choices and bracket options. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR400C10ALJNWTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Feeds filtered, regulated air to clamping fixtures on a machining centre, where the 5 um element helps keep water and fine particles out of the clamp cylinders and the check valve holds the circuit if upstream supply dips.
Conditions the air feeding cylinder-driven diverters, sealers and pushers on a packaging conveyor line, with automatic drain keeping condensate out of the circuit during continuous shifts.
Sits upstream of solenoid valve manifolds on an assembly-line automation circuit, delivering filtered, regulated low-pressure air to protect valve internals and keep actuation consistent.
Size and port set the capacity ceiling: this unit is size 400 with NPT3/8 (3/8 in) ports; step up to size 600 for larger ports and more flow, or down to 200/300 for compact lines. The 5 um W-grade element suits air that feeds sensitive components; the 40 um standard grade is the usual choice for general circuits. The automatic drain here empties the bowl on its own - choose manual drain where you prefer operator-controlled blowdown, or the differential-pressure default. This is the low-pressure (L) regulator type; standard types are available if your line runs higher. No gauge is fitted - a square or round gauge with MPa, psi or bar scale can be specified. Threads come as PT (standard), G (BSPP) or NPT, and a bracket can be added where this no-bracket configuration needs panel support. Flow is published as curves, not a single rating - 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 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for the GFR400 size at your conditions on request.
The A in the code selects the automatic drain, which discharges collected condensate from the bowl without manual blowdown. The K code fits a reverse (check) valve, and N means no gauge is supplied - a square or round gauge with an MPa, psi or bar scale can be ordered instead if you want a local pressure reading.
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.