The AirTAC GFR400C10ALJF1TK AirTAC Filter Regulator NPT3/8 Auto Drain 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 GFR400C10ALJF1TK is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation in a single body. This size 400 configuration has 3/8 in NPT ports, the 40 um standard filter element and an automatic drain that discharges collected condensate without manual attention. Regulation is the low-pressure (L) type, the embedded square gauge reads in MPa, and a reverse/check valve is fitted; no mounting bracket is included (J code). Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the size 400 bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the range include manual or differential-pressure drains, a 5 um filter element (code W), gauge scales in psi or bar, an external round gauge, PT and G (BSPP) threads and mounting brackets. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C10ALJF1TK AirTAC Filter Regulator NPT3/8 Auto Drain |
|---|---|
| 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) |
Filtered, low-pressure regulated air feeding swing clamps and hold-down cylinders on an assembly fixture, with the automatic drain removing condensed water before it reaches the fixture valves.
Clean, regulated air to pneumatic actuators and sample valves on a pilot skid, where the 40 um element and the square MPa gauge keep the supply visible and consistent at low operating pressures.
A filtered, regulated drop feeding the stopper and pusher cylinders on a bottling conveyor, with the fitted reverse valve part of the specified configuration and the automatic drain handling condensate at the drop point.
Size 400 with 3/8 in NPT ports sits in the upper-middle of the GFR range (200/300/400/600); step size against the flow your line needs - flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering. This unit is the low-pressure (L) type and its exact regulation range is not published; if you need the standard regulation range, order the non-L variant of the same size. Drain is automatic (A); manual (M) and differential-pressure (the no-code default) versions exist. Filtration is the 40 um standard element, with 5 um available as code W. The gauge is the embedded square type with an MPa scale; psi or bar scales and an external round gauge are options. Thread here is NPT - PT is the standard thread and G (BSPP) is also a catalogue option. The J code means no mounting bracket is included.
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 figure here. Tell us your application and we will confirm the flow and datasheet figures for this exact unit on request before you order.
The A in the code is the automatic drain, which discharges collected condensate from the bowl without manual attention. The GFR family also offers a manual drain (code M) and a differential-pressure drain (the no-code default) if a different arrangement suits your installation.
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.