The AirTAC AirTAC GFR400C15MLNWT Filter Regulator 1/2 in 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 GFR400C15MLNWT is a GFR-series filter regulator: water-and-particulate filtration and pressure regulation combined in one body, with a drain bowl but no lubricator. This unit is the 400 size with 1/2 in NPT ports (PT is the AirTAC standard thread; G and NPT are order options), a 5 um filter element (the finer W grade, against the 40 um standard), a manual drain, the low-pressure regulator type, and no gauge fitted. The metal bowl is paired with an included mounting bracket.
It is a genuine AirTAC part. The GFR family spans the 200, 300, 400 and 600 sizes, with port options from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, gauge and bracket options, and G, NPT or PT threads. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | AirTAC GFR400C15MLNWT Filter Regulator 1/2 in 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) |
On a bottling conveyor, low-pressure air holds bottles steady while caps are torqued. This filter regulator cleans the supply and holds the clamp circuit at its set point, with the 5 um element protecting the clamp cylinders' seals from water and particles.
In a paint-shop spray booth, gun atomising air must be clean and steadily regulated. This unit filters water and particles down to 5 um ahead of the guns and regulates the supply at the low set pressure the low-pressure type is selected for.
Diverter gates and pushers on a packaging conveyor cycle on regulated air. This one-body filter regulator conditions and regulates that circuit, and the manual drain lets an operator bleed collected water from the metal bowl at shift start.
Choose GFR when one body must both clean the air and hold a set pressure. The 400 size with 1/2 in ports suits circuits plumbed at 1/2 in; step up to 600 or down to 300 or 200 as your port and flow needs change. This code fixes the real choices: the 5 um element for finer protection than the 40 um standard, a manual drain where an operator can bleed the bowl on a routine, the low-pressure regulator type for circuits that call for that variant (its exact range is not published, so confirm it with us), and NPT threads to match US piping (PT is the standard, G is also available). No gauge is fitted (code N) and no check valve is included; a mounting bracket is included.
Because flow is published as curves rather than a single rating, send us your working pressure and required flow 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your working pressure and required flow and we will confirm the GFR400 curve and sizing against the datasheet on request.
This code carries M, a manual drain: an operator opens the drain to expel water collected in the bowl. If the unit will sit where nobody drains it routinely, order the same GFR400-15 configuration with the automatic (A) or differential-pressure (blank, the default) drain instead.
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.