The AirTAC GFR400C15LJC2WTK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR400C15LJC2WTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds the downstream pressure at a set point, in a single body. This size 400 unit is built around a 1/2 in NPT port and carries the W-coded 5 um element, a finer grade than the standard 40 um filtration. It is the low-pressure regulator type, the bowl drains by differential pressure, a round psi gauge is fitted so the set point can be read directly, and a reverse/check valve is included. The unit is supplied without a mounting bracket and has a metal bowl. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and is ordered with a choice of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale (MPa, psi or bar), thread (PT standard, with G and NPT as order options), bracket and reverse/check valve. AirTAC publishes flow for this series as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR400C15LJC2WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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) |
On a beverage bottling line, filtered and regulated air feeds the cylinder banks that clamp, lift and divert bottles. The 1/2 in NPT port suits the header supply, the 5 um element helps keep water and particulate out of the downstream valves, and the fitted round psi gauge lets the line technician read the set point directly.
In a machining cell, this unit conditions the air feeding fixture-clamping cylinders: filtration ahead of the valve stack, regulation to the set pressure the clamping circuit was designed around, and the reverse/check valve in the circuit where the application calls for one. The differential-pressure drain clears collected water while the line runs.
On a packaging conveyor with pneumatic pusher and diverter stations, a single 1/2 in filter-regulator point conditions the air for several stations at once. The low-pressure regulator type suits circuits running at modest set pressures, and the 5 um grade protects the directional valves and cylinders fed from it.
Within the GFR range the real, decodable choices are: the size and port step (200/300/400/600, 1/8 in to 1 in) matched to the air demand of the circuit; the filter grade (40 um standard, 5 um with the W code, as fitted here); the drain type (differential-pressure as on this unit, automatic, or manual); the gauge (embedded square as standard, external round optional, in MPa, psi or bar scales - this unit carries a round psi gauge); the thread (PT is the standard, G and NPT are order options - this unit is NPT); the mounting bracket; and the reverse/check valve. This unit is also the low-pressure regulator type, whose exact regulation range is not published in the catalogue. Because AirTAC publishes flow as curves rather than a single rated figure, 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 the GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your supply pressure, set point and air demand and we will confirm the flow and datasheet figures for this unit on request before you order.
The W code specifies the optional 5 um filter element instead of the 40 um standard grade, for finer particulate removal. The L code makes this unit the low-pressure regulator type; its exact regulation range is not published in the catalogue, so confirm it with us against your set point. The C2 code means a round gauge with a psi scale is fitted.
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.