The AirTAC AirTAC GFR400C10MLJNWTK 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 GFR400C10MLJNWTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 5 um filter element (the finer of the two catalogue grades), a manual drain bowl in metal, the low-pressure regulator type, and a built-in reverse/check valve that holds downstream pressure when upstream supply drops. No gauge is fitted and no mounting bracket is included, so add a gauge separately if you want a local pressure readout and plan your own mounting. The port is NPT3/8 (3/8 in NPT thread).
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with a choice of drain type, filter grade, gauge and scale, thread (PT standard, G and NPT as options), bracket and check valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | AirTAC GFR400C10MLJNWTK 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 clamp and hold-down cylinders on a press tooling cell, with the check valve holding clamp pressure if the main supply dips mid-cycle.
Mounted at the drop point feeding diverters, pushers and sealing cylinders on a packaging conveyor line, removing water and fine particulate before it reaches the valves.
Regulating a reduced-pressure air circuit serving air knives and light actuation in a processing area, where the low-pressure regulator type and 5 um element keep the supply clean and stable.
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, one step up from the 300 series, and larger sizes carry larger ports and more flow. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing from the datasheet before you order. This version carries the 5 um element (code W); the 40 um grade is the standard alternative if your downstream components do not need finer filtration. The manual drain (code M) means someone must open the drain periodically to clear collected condensate - choose automatic or differential-pressure drain codes if you cannot schedule that. The low-pressure regulator type suits circuits that run at reduced supply pressures; the exact adjustment range for this variant is not published, so confirm it with us. Note that no gauge is fitted (code N) and no bracket is included (code J) - order a gauge with your preferred scale separately if you need one. The thread here is NPT; PT is the catalogue standard and G (BSPP) is also available as an order option.
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 number, so we do not quote a figure that could mislead your sizing. Send us your application details and we will confirm the flow curves and datasheet figures for this exact model on request.
The M code means condensate collected in the metal bowl must be drained by hand at intervals you set based on humidity and duty - if nobody is available to do that, ask us about the automatic or differential-pressure drain versions of the same size. The N code means no gauge is supplied; the regulator works without one, but you can order a gauge separately with your preferred scale if you want a local pressure readout.
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.