The AirTAC GFR400C10LJNWT AirTAC Filter Regulator 3/8 in NPT 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 GFR400C10LJNWT 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 3/8 in NPT port, a fine 5 um filter element (code W, against the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and the low-pressure regulator type (code L) for circuits that run at reduced set-points. No gauge is fitted (code N) and no mounting bracket is included (code J), so plan a local pressure readout and panel or bracket fixing separately if the application needs them.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, gauge options, and G (BSPP) or NPT threads alongside the PT standard. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR400C10LJNWT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Feeding clamp cylinders on a CNC machining cell: the 5 um element keeps spool valves and clamping valves clean, while the low-pressure regulator holds a reduced, repeatable clamp pressure so workpieces are held without crushing.
Supplying air to a carton-sealing and case-erector section of a packaging line: filtered, regulated air at a controlled low set-point keeps sealing cylinders and diverters moving consistently through the shift, with the differential-pressure drain clearing condensate as it collects.
Regulating supply air to dobbies and pneumatic yarn-guiding actuators on a textile weaving floor, where the low-pressure type suits the reduced circuit pressure and fine 5 um filtration protects the small pilot valves these machines depend on.
Start with the port step: this unit is the size 400 body with a 3/8 in NPT port; if your line needs more or less flow capacity, step up or down through the 200/300/400/600 size ladder, which also moves the port from 1/8 in to 1 in. You have already chosen the fine 5 um element (W) over the 40 um standard - keep 40 um for general shop-air protection and reserve 5 um for downstream components that need cleaner air. The differential-pressure drain is the default: it needs no manual attention but relies on a sufficient pressure differential to purge, so pick automatic drain (A) for low, steady duty or manual drain (M) where you want scheduled draining. This is the low-pressure regulator type (L); if your circuit runs at conventional set-points, the standard type is the alternative. No gauge is fitted - gauges are optional, in embedded square or external round form with MPa, psi or bar scales. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable. Brackets are optional (this code has none). Flow is published as curves, not a single rating, so ask us to confirm sizing against the 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 the GFR400 series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or l/min number for this unit. Tell us your application and we will confirm the flow and sizing from the datasheet on request before you order.
The W in the code selects the optional 5 um filter element instead of the 40 um standard, for finer water and particulate removal. The N selects no gauge, so no pressure gauge is supplied - a square or round gauge with an MPa, psi or bar scale can be ordered as an option if you need a local 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.