The AirTAC GFR400C15C2WTK AirTAC Filter Regulator 1/2 NPT, 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 AirTAC GFR400C15C2WTK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This size 400 unit is threaded NPT1/2, carries a 5 um filter element (code W), and drains condensate by differential pressure. It is fitted with a round pressure gauge reading in psi and a reverse/check valve, and the regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range. A mounting bracket is included, the polycarbonate bowl suits the -5 to 70 C non-freezing operating range, and the maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and can be ordered with 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, PT, G or NPT threads, and with or without a bracket. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C15C2WTK AirTAC Filter Regulator 1/2 NPT, 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) |
Feeding clean, regulated air to a machining centre's directional valves and clamping actuators: the 5 um element keeps fine debris and water out of the valve islands, while the regulator holds a steady setpoint for consistent clamp force on every cycle.
Supplying the divert and pusher cylinders on a packaging conveyor: the filter stage strips condensate before it reaches the cylinders, the differential-pressure drain handles the collected water, and the psi gauge lets operators verify line pressure at a glance.
Regulating air to the weld gun clamps and fixture cylinders in a robotic welding cell: the reverse/check valve holds the downstream setpoint if upstream supply drops, protecting the clamp position mid-weld, and the 5 um grade suits the cell's pilot valves.
Size 400 with a 1/2 inch NPT port sits in the upper half of the GFR range; step down to 300 or 200, or up to 600, depending on the air demand of your line - we can check the published flow curves against your requirement. Filtration here is 5 um (code W) instead of the 40 um standard, so choose this grade where downstream valves and instruments need finer protection. The drain is differential-pressure, which bleeds condensate as the pressure drop across the element builds; automatic and manual drains are orderable alternatives. The round gauge reads psi, while embedded square gauges and MPa or bar scales are options. Thread is NPT on this unit, with PT (the standard) and G available as catalogue alternatives, and the mounting bracket is included. Because flow is published as curves rather than a single rated figure, 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 the GFR400 as curves rather than a single rated figure, so quoting one number would not be honest. Send us your inlet pressure, set pressure and air demand, and we will confirm the flow from the datasheet for your specific application before you order.
The W in the code selects the 5 um filter element instead of the 40 um standard, giving finer protection for downstream valves and instruments. The K fits a reverse/check valve that holds downstream pressure if the upstream supply is interrupted. Both are catalogue-orderable 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.