Airtac GFR Filter Regulator GFR400C15MNWK
The AirTAC GFR Filter Regulator GFR400C15MNWK 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.
- TypeFilter regulator
- Port sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GFR Filter Regulator GFR400C15MNWK
The GFR400C15MNWK is an AirTAC G-series filter regulator: filtration and pressure regulation in one body, with a drain bowl but no lubricator. This 400-size unit has a 1/2 in PT port, a manual drain, the 5 um (W) element, no gauge, and a reverse (check) valve fitted, so flow cannot run back towards the inlet. With the manual drain the regulation range is 0.05-0.9 MPa (7-130 psi) and the maximum inlet pressure is 1.0 MPa (145 psi); the 400-size bowl is polycarbonate (PC) and the working range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. Across the G-series (sizes 200 to 600) you can specify 5 um or standard 40 um elements, manual, automatic or differential-pressure drains, embedded square or external round gauges, and G (BSPP) or NPT threads; a mounting bracket is included. Flow is published as curves, not a single rated figure, so ask us to confirm sizing and the datasheet for your application on request.
Airtac GFR Filter Regulator GFR400C15MNWK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR400C15MNWK |
|---|---|
| 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.
Model Code: Airtac GFR Filter Regulator GFR400C15MNWK
| 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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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) |
Where the Airtac GFR Filter Regulator GFR400C15MNWK Is Used
CNC machine clamping circuits
Supplying the workpiece clamps and tool-change cylinders on a machining centre, where the 5 um element protects fine valves and the check valve blocks backflow if the upstream main loses pressure.
Test-rig and laboratory air supply
Regulating air to instrumentation panels and test benches, where the fine 5 um element keeps sensitive gauges and transducers clean and the reverse valve holds the circuit against upstream disturbances.
Control panel air preparation
Mounted at the inlet of a pneumatic control panel feeding I/P modules and pilot valves, combining cleaning and regulation in one body to save panel space and piping.
Is the Airtac GFR Filter Regulator GFR400C15MNWK the Right Unit?
Use the 400 size with its 1/2 in PT port where your machine supply circuit calls for that connection; smaller 200/300 and larger 600 sizes cover the rest of the range. The K code adds a reverse (check) valve - useful where a drop in upstream pressure must not pull flow back from the regulated side. The M code gives a manual drain and a regulation range of 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions are available if the bowl cannot be bled by hand. The W code selects the 5 um element over the standard 40 um, the cleaner choice for valves and instruments. No gauge is fitted; the series offers an embedded square gauge or an external round gauge. Thread is PT as standard, with G (BSPP) and NPT as catalogue options. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (See datasheet here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR Filter Regulator GFR400C15MNWK FAQ
Flow for the GFR series is published as performance curves rather than a single rated number, so we do not state one here. Tell us your inlet pressure, set pressure and consumption and we will confirm the sizing from the datasheet on request.
K indicates that a reverse (check) valve is fitted, which blocks flow from running back towards the inlet. Everything else matches the GFR400C15MNW: 400 size, 1/2 in PT port, manual drain, 5 um element, no gauge, 0.05-0.9 MPa (7-130 psi) regulation range and a 1.0 MPa (145 psi) maximum inlet pressure.
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Standard models are processed and dispatched in 3-5 business days.
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Request a Quote for Airtac GFR Filter Regulator GFR400C15MNWK
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.