The AirTAC GFR400C15AF3T AirTAC Filter Regulator NPT1/2 Auto Drain 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 GFR400C15AF3T is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 1/2 in NPT port, a 40 um standard filter element, an automatic drain that ejects collected condensate without manual attention, and an embedded square gauge scaled in bar so the set pressure is visible at a glance. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, differential-pressure, automatic or manual drains, a 5 um (code W) element option, gauge scale choices and an optional reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C15AF3T AirTAC Filter Regulator NPT1/2 Auto Drain |
|---|---|
| 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) |
Point-of-use air preparation ahead of a carton-forming and sealing machine: the filter stage strips water and pipe scale from the plant air ring main, and the regulator holds a steady supply pressure to the sealing cylinders while the automatic drain keeps condensate off the floor without daily checks.
Feeding air-driven gates, stoppers and diverters on a bottling or distribution conveyor, where a stable regulated pressure keeps gate timing consistent between shifts and the 40 um element protects the valve spools from particulate carried over from the compressor room.
Mounted at the inlet of a multi-station assembly machine with air cylinders, grippers and air blow-off: the regulator sets one clean working pressure for the whole manifold, the square bar gauge gives operators a visible setpoint, and the automatic drain handles condensate on a machine that runs unattended.
Size 400 with a 1/2 in port sits in the upper-middle of the GFR range; step up to size 600 or down to 300 depending on the flow your line needs - we will confirm the flow curve against your demand before you order. The automatic drain on this unit suits unattended duty; choose manual drain where an operator checks the bowl routinely, or differential-pressure drain as the default. The 40 um element is the standard grade; specify the 5 um W option where finer particulate removal matters. The square gauge here is scaled in bar; MPa and psi scales are also available, and an external round gauge is optional. PT is the standard thread and G (BSPP) or NPT are order options - this unit is specified NPT. A mounting bracket is included.
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, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your line's air demand and operating pressure and we will confirm the flow curve and correct size from the datasheet before you order.
This unit carries code A, meaning an automatic drain that ejects collected condensate by itself - useful on machines that run unattended. The GFR family is also available with a manual drain (code M) or the differential-pressure drain default, so you can match the drain to how the unit is maintained.
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.