The AirTAC GFR400C15LF3TK 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 GFR400C15LF3TK is a size-400 filter regulator: it removes water and particulate from compressed air and holds the downstream pressure at your set point, in one body. This configuration has NPT1/2 ports, a 40 um standard filter element and a differential-pressure drain, and it carries the low-pressure regulator type. A square pressure gauge reading in bar is fitted, a reverse/check valve is built in, and the mounting bracket is included. The polycarbonate bowl suits the non-freezing -5 to 70 C operating range.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and PT, G and NPT threads. Elsewhere in the series you can order a 5 um element (code W), automatic or manual drains, and gauge scales in MPa, psi or bar. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm sizing and the full datasheet for your application before ordering.
| Model | GFR400C15LF3TK 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) |
On the fixture-clamping circuit of a machine tool, the low-pressure regulator holds a reduced clamp pressure downstream of the drop leg while the 40 um element keeps rust and pipe scale out of the clamping cylinders and valves.
Feeding the diverters, pushers and gripper cylinders on a carton packaging line: filtered, regulated air at a stable set point keeps stroke timing consistent through a full shift, with the check valve stopping back-flow toward the supply.
At the drop of a bench assembly cell, the filter and regulator in one body saves panel space and plumbing joints, while the included bracket and square bar gauge make set-up and monitoring straightforward for the cell operator.
Start with size and port: this unit is size 400 with 1/2 in NPT ports, one step up from the 300 series - the right step depends on the flow your line needs, and since AirTAC publishes flow as curves rather than one rating, send us your demand and we will confirm the fit. Next, the drain: this unit uses the differential-pressure drain, while automatic (A) and manual (M) versions exist if you prefer. The 40 um element is standard; a 5 um version (W) is available when downstream equipment needs finer filtration. The fitted square gauge reads in bar, with MPa and psi scales orderable and an external round gauge optional.
On thread, this unit is NPT; PT is the standard thread and G is also a catalogue option, so order the thread your pipework actually uses. The low-pressure regulator type (L) is intended for circuits set below the usual regulator range - the exact adjustment range for this variant is not published, so confirm your required set pressure with us before ordering. Flow is published as curves, not a single rating, so ask us to check sizing against your application.
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 rather than a single rated figure, so there is no one number we can honestly quote. Tell us your line pressure and the flow your application needs, and we will confirm the sizing against the datasheet before you order.
It means this GFR400 carries the low-pressure regulator variant rather than the standard one, intended for circuits set below the usual regulator range. The exact adjustment range for this variant is not published in the material we hold, so send us your required set pressure and we will confirm suitability.
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.