The AirTAC GFR400C15ALJF1TK 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 AirTAC GFR400C15ALJF1TK is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built with a 1/2 in NPT port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, and the low-pressure regulator type. It ships as coded with an embedded square gauge scaled in MPa and a reverse/check valve fitted, and no mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um element option (code W), optional external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR400C15ALJF1TK 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) |
Feeds filtered, regulated air to a carton-sealing and wrapping line where the machine controls run at reduced supply pressure. The automatic drain keeps condensate out of the valves between shifts without an operator walking the line.
Sits upstream of clamp and fixture cylinders on a CNC machining cell, removing water and pipe scale at 40 um while holding a steady low setpoint so clamping force stays repeatable. The reverse/check valve helps hold the downstream side if upstream pressure dips.
Prepares air for conveyor-mounted blow-off nozzles and diverter actuators in a bottling plant. The 1/2 in port suits the larger supply run, the automatic drain handles moisture carryover, and the square MPa gauge gives the technician a clear setpoint readout.
Step through the decodable choices: pick the size (200/300/400/600) so the port and flow path match your line - this unit is size 400 with a 1/2 in port. Choose the drain: automatic (this unit) empties the bowl on its own, manual needs operator action, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify W for the 5 um element if finer filtration is needed. Gauge scale is selectable (MPa, psi or bar) and an external round gauge is available as an option. Thread is PT as standard with G and NPT as order options - this unit is NPT. Bracket is optional (this configuration has none).
Because flow is published as curves and not a single rating, and the low-pressure type's regulation range is not stated as a single figure, ask us to confirm the datasheet and check 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 number, so we do not quote a rated flow, Cv or SCFM figure. Tell us your application and required flow, and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code selects the automatic drain, which expels collected condensate from the bowl without operator action - useful on lines that run unattended. The alternatives are manual drain (code M, emptied by hand) and differential-pressure drain (blank, the catalogue default). Note the bowl on this size 400 unit is polycarbonate, and the unit is rated for -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.