The AirTAC GFR400C15C3TK 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 GFR400C15C3TK is a size 400 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is threaded NPT1/2, carries the standard 40 um filter element, and drains condensate by differential pressure, so the bowl drains automatically as the pressure differential across the element builds. The fitted round gauge reads outlet pressure in bar, and the built-in reverse (check) valve holds downstream pressure when the upstream supply is shut off. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range for this drain type is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this size, and the unit includes a mounting bracket.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 5 um element option, gauge style and scale choices, G or NPT thread options, and a low-pressure regulator type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application before ordering.
| Model | GFR400C15C3TK 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) |
Feeds filtered, regulated air to the tool-change and clamping circuits of a CNC machining centre, with the check valve holding clamp pressure if the shop supply drops.
Conditions the air feeding gripper and capper cylinders on a bottling line, where the 40 um element protects valves from water and debris carried in the plant air.
Sits ahead of a solenoid-valve manifold on an automated assembly machine, delivering steady regulated pressure in bar so valve and cylinder sequencing stays repeatable.
Size 400 with a 1/2 inch port sits in the upper half of the GFR range, so step up or down between 200, 300, 400 and 600 according to the air demand of the line rather than the pipe size alone. This unit uses the standard 40 um element; specify the W variant if the application needs 5 um filtration. Drain is differential-pressure here, which suits lines that run steadily; choose automatic drain for unattended duty or manual drain where an operator drains the bowl on a schedule. The fitted round gauge reads in bar, and embedded square gauges with MPa, psi or bar scales are alternatives. PT is the standard thread; G (BSPP) and NPT are order options, and this unit is specified NPT. A bracket is included, and the K code confirms a reverse (check) valve is fitted.
Because flow is published as curves and not as a single rated number, we do not quote a rated flow figure. Send us your application's air demand and we will confirm sizing against the datasheet curves 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 GFR400 series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application's air demand and we will confirm the flow figures from the datasheet on request before you order.
K means a reverse (check) valve is fitted, so downstream pressure is held when the upstream supply is shut off. This unit has no drain letter, which is the differential-pressure drain: condensate is discharged from the bowl automatically as the pressure differential across the 40 um element builds, with no operator action needed.
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.