The AirTAC GFR400C15ALC3WTK 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 GFR400C15ALC3WTK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at a set point. This configuration is sized for a 1/2 in NPT port, carries the W 5 um filter element for finer filtration than the standard 40 um grade, and drains collected condensate automatically, so the metal bowl does not need manual bleeding during a shift. It is the low-pressure regulator type, is fitted with an external round gauge reading in bar, includes a reverse (check) valve to hold downstream pressure if the supply dips, and comes with a mounting bracket. 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 family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for drain type, 40 um or 5 um filtration, gauge style and scale, G (BSPP) or NPT thread in place of the PT standard, and a check valve. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR400C15ALC3WTK 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) |
Conditioning and regulating the air feeding clamp and hold-down cylinders on CNC machining fixtures, where the fitted check valve holds the clamp position if shop supply pressure dips mid-cycle.
Supplying clean, regulated air to case-erector and carton-sealer cylinders along a packaging conveyor, with the automatic drain keeping condensate out of directional valves during long production runs.
Feeding stable low-pressure air to pneumatic control loops, positioners and panel-mounted devices, with the round bar gauge giving operators a local pressure reading at the panel.
Size and port step up with flow demand: 200 for 1/8 to 1/4 in ports, 300 for 3/8 to 1/2 in, 400 for 1/2 to 3/4 in, and 600 for 3/4 to 1 in - choose the size whose published flow curve covers your consumption with margin. This unit is already the low-pressure regulator type with 5 um (W) filtration and an automatic drain; the same family also offers manual and differential-pressure drains and the standard 40 um element if your application tolerates them. Gauge scale (MPa, psi or bar) and thread (PT standard, with G and NPT as order options) are the remaining decodable choices. Because flow is published as curves rather than a single rating, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
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. Send us your required flow and working pressure and we will confirm from the datasheet whether this size 400 unit at NPT1/2 covers your application.
The A in this code fits an automatic drain, which expels collected condensate from the bowl without manual attention. The same GFR400 family is also available with a manual or differential-pressure drain, and with the standard 40 um element instead of this 5 um (W) grade - tell us which combination you need and we will confirm it.
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.