The AirTAC GFR400C15ALF2WTK AirTAC Filter Regulator NPT1/2 5 um 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 GFR400C15ALF2WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a drain bowl and no lubricator. This configuration is built for a 1/2 in NPT port and carries the W grade 5 um filter element (40 um is the standard grade). Condensate is removed by the automatic drain, the regulator is the low-pressure type (its exact adjustment range is not published, so we confirm it on request), and an embedded square gauge with a psi scale is fitted. A reverse/check valve is included, the mounting bracket is included, the bowl is polycarbonate (PC) at this size, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and catalogue options for drain type, filter grade, gauge and scale, thread (PT is the standard; G and NPT are ordered options), bracket and reverse valve. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and the datasheet for your application before ordering.
| Model | GFR400C15ALF2WTK AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| 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 bottling line running gripper and lift cylinders at reduced set pressures, this low-pressure GFR400 cleans the supply to 5 um, regulates it downstream of the compressor, and the automatic drain clears condensate before it reaches the valves.
Feeding stoppers, pushers and diverters on a packaging conveyor, this 1/2 in NPT filter regulator protects directional valves from water and fine particulate while holding the reduced pressure the actuators were designed around.
In a machine-tool cell where pneumatic clamps and tool-change cylinders need steady, filtered air, the 5 um element guards the clamping valves, the psi-scale square gauge gives operators a direct setpoint readout, and the check valve holds the circuit if supply pressure drops.
Size and port come first: GFR400 with a 1/2 in NPT port sits in the larger half of the range (200/300/400/600, ports 1/8 in to 1 in), so step the size up or down to match the flow your circuit needs - we can check the published flow curves against your demand. Drain type is a real choice: this unit has the automatic drain, while manual and differential-pressure drains are the other catalogue options. Filtration is 5 um here (code W) versus the 40 um standard element, so choose the grade by how clean the downstream air must be. The regulator is the low-pressure type; its exact adjustment range is not published, so confirm it with us. Gauge scale (MPa, psi or bar), PT versus G versus NPT thread, bracket and the reverse/check valve complete the decode. Flow is published as curves, not a single rating - 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 this series as curves rather than a single rated figure, so we do not quote a number. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
The W code in the model selects the 5 um filter grade, which removes finer particulate and carries less water through to downstream valves and cylinders. The 40 um element is the standard grade, and both are catalogue options across the GFR range.
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.