The AirTAC GFR40015MC3WTK AirTAC Filter Regulator NPT1/2 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 400 size with a 1/2 in NPT port, a 5 um filtration element (code W, against the 40 um standard), a manual-drain polycarbonate bowl, a round gauge reading in bar, a fitted reverse/check valve (code K), and the mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the standard regulator covers 0.05-0.9 MPa (7-130 psi); operating temperature 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 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um filtration, gauge styles and MPa/psi/bar scales, and PT, G or NPT thread options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR40015MC3WTK AirTAC Filter Regulator NPT1/2 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Point-of-use filter regulation ahead of a CNC machining centre's clamping and tool-change circuits: the 5 um element protects directional valves from particulate and water, the regulator holds a steady setting, and the check valve is fitted for supply-side peace of mind.
Regulated, filtered air for carton-forming and wrapping cylinders on a packaging line. The manual-drain bowl fits a routine where an operator drains the bowl during daily startup checks, and the bar-scale gauge gives a clear local pressure reading at the machine.
Filtered and regulated supply ahead of a valve manifold on a robotic assembly cell. The 1/2 in NPT port suits manifold inlet plumbing, the 5 um grade suits sensitive pilot circuits, and the included bracket simplifies mounting beside the cell control cabinet.
Start sizing with the port step: this 400-size unit carries a 1/2 in NPT port, one frame up from the 300 series, so choose the size against the flow your line needs - because flow is published as curves rather than a single rating, ask us to confirm the sizing against your application before ordering. Drain type is a real operational choice: this code has a manual drain, meaning the bowl is drained by an operator, while automatic and differential-pressure drain versions suit unattended installations. Filtration here is the 5 um element (code W); the 40 um standard element is the usual choice for general plant air, with 5 um for finer protection. The round gauge on this code reads in bar; an embedded square gauge with MPa or psi scale is the alternative. Thread is NPT on this code - PT is the standard and G/NPT are order options - and the mounting bracket is included.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow 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 l/min or SCFM number we can honestly quote. Send us your air demand and line pressure and we will confirm the sizing from the datasheet curves on request before you order.
This code carries M (manual drain): the polycarbonate bowl is drained by an operator as part of routine checks. Where the installation runs unattended, the same GFR400 filter regulator is available with automatic drain (code A) or differential-pressure drain (the default, blank code) - just ask for the matching model code.
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.