The AirTAC GFR400C15ALJC3TK AirTAC Filter Regulator NPT1/2 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 GFR400C15ALJC3TK 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 1/2 in NPT port, an automatic drain that bleeds collected condensate from the polycarbonate bowl without daily manual attention, a standard 40 um filter element, and the low-pressure (L) regulator type for circuits that run below standard line pressures. It ships from the factory with an external round gauge scaled in bar, a built-in check (reverse-flow) valve that lets downstream air pass back through the unit when the upstream supply is shut off, and no mounting bracket.
This is a genuine AirTAC part. The GFR400 sits in the GFR range that spans sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, manual or differential-pressure drains, a 5 um (code W) element upgrade, and gauge choices. Published flow data for this series is given as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C15ALJC3TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Conditioning the air that actuates clamp cylinders and swing clamps on a machining cell fixture: the filter stage strips water and chips-laden particulate before it reaches the clamp valves, while the regulator holds the clamp circuit at its set pressure. The check valve holds the circuit against upstream shutdown.
Supplying the pusher cylinders, diverters and product guides on a packaging or bottling conveyor, where the actuation circuit runs at reduced pressure. The low-pressure regulator type suits the reduced setpoint, the automatic drain keeps condensate out of the line on continuous shifts, and the bar gauge gives operators a local reading.
Feeding clean, regulated low-pressure air to lab instruments, sample transport cylinders and pneumatic actuators on analytical benches. The 40 um element protects downstream valves and fittings from particulate and condensed water, and the check valve prevents backflow into the supply line when the bench supply is isolated.
Work from the port step first: the GFR range steps through sizes 200, 300, 400 and 600, and this unit is the size 400 with a 1/2 in NPT port - the right choice when your circuit is plumbed at 1/2 in and you want the larger size 400 body. Because flow is published only as curves, not a single rating, send us your application details and we will confirm sizing against the curve data before you order. Other real choices on this family: drain type (this unit has the automatic drain; manual and differential-pressure drains are the alternatives), filter grade (40 um standard here, 5 um with code W where finer filtration is needed), gauge (this unit carries the external round gauge with a bar scale; embedded square gauges and MPa/psi scales are the other options), thread (PT is the catalogue standard, G and NPT are order options - this unit is NPT), and bracket (this unit is ordered without one; a bracket can be specified).
One note specific to this code: it is the low-pressure (L) regulator type, intended for circuits that run below standard line pressures. The exact setpoint range for the low-pressure variant is not published in the general table, so confirm the range with us against the datasheet before ordering if your setpoint is critical.
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 number, so we do not quote a rated flow, Cv or SCFM figure for this unit. Tell us your application - inlet pressure, setpoint and the equipment you are supplying - and we will confirm the flow from the datasheet curves on request before you order.
The L code means this GFR400 carries the low-pressure regulator type, intended for circuits running below standard line pressures. The exact setpoint range for the low-pressure variant is not published in the general table, so confirm the range with us against the datasheet before ordering if your setpoint is critical. The unit's maximum inlet pressure is 1.0 MPa (145 psi) and its working temperature range is -5 to 70 C, non-freezing.
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.