The AirTAC GFR400C10LJC3WTK 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 GFR400C10LJC3WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is threaded NPT3/8, carries the finer 5 um filter element (code W), drains condensate by differential pressure, and is built as the low-pressure regulator type (L). A round gauge with a bar scale is fitted, and the K code adds a reverse (check) valve that helps hold downstream pressure if the upstream supply drops. No mounting bracket is included with this configuration.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and can be ordered with manual or automatic drains, the 40 um standard element, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR400C10LJC3WTK 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) |
Feeds pneumatic clamps and swing cylinders on a fixture line that works at reduced pressure, with the 5 um element helping keep spool valves free of scale and the check valve holding the clamp circuit if the main supply dips.
Mounted at the air drop of a packaging line, it filters carryover water from shop air and lets engineers set a stable, lower working pressure for the machine's cylinders and actuators, with a local bar-scale gauge for checking settings.
On a test bench where instruments need clean, gently regulated air, the 5 um element and the low-pressure regulator type suit fine setting, while the round gauge gives a clear bar reading at the bench.
Choose the size by the port and flow your line needs: this unit is size 400 with a 3/8 inch NPT port, and larger sizes carry larger ports and more flow. Because AirTAC publishes flow as curves rather than a single rated figure, send us your demand and we will confirm the right size before you order. For the element, 40 um is the standard grade and the W code on this model selects the finer 5 um option - choose 5 um where downstream valves or instruments need cleaner air. Drain choice is differential-pressure (the standard, as here), automatic (A) or manual (M).
Gauge options are the embedded square gauge or an external round gauge, in MPa, psi or bar scales; this unit carries a round gauge with a bar scale. Thread is PT as the AirTAC standard, with G (BSPP) and NPT available as order options - this model is the NPT version. The L code marks the low-pressure regulator type; its exact adjustment range is not published in the catalogue, so confirm it with us. Brackets are optional (this configuration is without one), and the K code adds a reverse/check valve.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, port size and required flow and we will confirm from the datasheet whether size 400 with a 3/8 inch NPT port suits your application.
L marks the low-pressure regulator type, intended for applications set below the standard regulator range. The exact adjustment range for the low-pressure type is not published in the catalogue, so confirm it with us before ordering. The rest of this code decodes as: NPT3/8 port, 5 um element (W), differential-pressure drain, round bar-scale gauge, reverse/check valve (K) and no mounting bracket (J).
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.