The AirTAC GFR400C15ALJC2WT 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 GFR400C15ALJC2WT is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 1/2 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), an automatic drain that ejects collected condensate without manual attention, a low-pressure regulator type, and a round pressure gauge reading in psi. It ships without a mounting bracket and without a reverse/check valve, and the bowl on this unit is metal.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in, and is offered with a choice of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15ALJC2WT 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) |
Feeding a bank of directional control valves on an automated line: the 5 um element keeps scale and pipe debris out of the valve spools, the regulator holds a steady reduced pressure to the manifold, and the automatic drain clears condensate before it can carry over into the valves.
Supplying the cylinders and air grippers on a cartoning or wrapping machine, where the low-pressure regulator type suits circuits run at reduced settings, the psi gauge gives operators a familiar readout at the machine, and the 1/2 in port matches the machine's main air drop.
Conditioning air to a CNC fixture clamping circuit: filtered, regulated air protects the clamp cylinders and check circuits, the automatic drain suits a compressor room drop that runs unattended across shifts, and the metal bowl stands up to a fixed machine installation.
Start with the port step: this unit is size 400 with a 1/2 in NPT port, one step up from the 3/8 in size 400 alternative and two steps above the 1/4 in size 300 - match the step to the pipe run and the air demand of the downstream circuit. Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application before ordering. Next, choose the drain: this unit has the automatic drain, which suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives where you prefer controlled or pressure-assisted purging. The 5 um element (code W) is the finer choice over the 40 um standard when downstream valves and cylinders need cleaner air. The round external gauge on this unit reads in psi; embedded square gauges and MPa or bar scales are the other options. Thread is NPT here - PT is the standard form and G (BSPP) is the other order option - and brackets are optional (this unit omits one). Note this is the low-pressure regulator type; its exact adjustment range is not published in the material we hold, so confirm it with us on request.
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 GFR flow as curves rather than a single rated figure, so we do not quote one number here. Tell us your line pressure, set pressure and the air demand of the circuit, and we will confirm the flow and datasheet figures for this exact model on request before you order.
The A in the code selects the automatic drain: collected condensate is ejected on its own, which suits installations that run unattended or where the bowl is awkward to reach - the alternatives are manual and differential-pressure drains. The W in the code selects the 5 um element instead of the 40 um standard, giving finer particulate removal for downstream valves and cylinders; the trade-off is a finer element to keep an eye on in heavily contaminated air.
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.