Airtac GFR Filter Regulator GFR400C15NK
The AirTAC GFR Filter Regulator GFR400C15NK 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 GFR400C15NK
The GFR400C15NK is an AirTAC G-series filter regulator: filtration and pressure regulation in one body, with a drain bowl and no lubricator. This 400-size unit has a 1/2 in PT port, the default differential-pressure drain, the standard 40 um element, no gauge, and a reverse (check) valve fitted to block backflow towards the inlet. With the differential-pressure drain the regulation range is 0.15-0.9 MPa (20-130 psi); the maximum inlet pressure is 1.0 MPa (145 psi). The bowl is polycarbonate (PC), and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. Across the G-series (sizes 200 to 600) you can order 40 um standard or 5 um (W) elements, differential-pressure, automatic or manual 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 GFR400C15NK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR400C15NK |
|---|---|
| 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 GFR400C15NK
| 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 GFR400C15NK Is Used
Vehicle-servicing lift controls
Regulating the air to two-post and four-post lift lock and control cylinders in a service bay, with the check valve guarding the regulated circuit against dips in the workshop main.
Multi-station fixture supply
Feeding a bank of pneumatic fixtures on a welding or assembly line, where each station's regulator keeps clamping pressure steady and the 40 um element suits general shop air.
Process-line valve actuation
Supplying air to actuated process valves and dampers in a plant utility area, combining cleaning and regulation at the panel inlet in a single compact body.
Is the Airtac GFR Filter Regulator GFR400C15NK the Right Unit?
Choose the 400 size with its 1/2 in PT port where the machine supply circuit calls for that connection; sizes 200/300 and 600 cover smaller and larger duties. The K code adds a reverse (check) valve, the right choice where an upstream pressure loss must not draw flow back from the regulated side. The blank drain position is the differential-pressure drain, with a 0.15-0.9 MPa (20-130 psi) regulation range; specify the manual-drain code if you need to set pressures down to 0.05 MPa (7 psi). The blank filter position is the standard 40 um element, suited to general cylinder and valve supply; the W code gives the 5 um element. No gauge is fitted; an embedded square gauge or external round gauge can be specified instead. 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 GFR400C15NK FAQ
Flow for the GFR series is published as performance curves rather than a single rated figure, so we do not state a number here. Give us your inlet pressure, set pressure and consumption and we will confirm the sizing from the datasheet on request before you place the order.
Yes. The N code means no gauge is fitted on this unit, but the series offers an embedded square gauge or an optional external round gauge, with MPa, psi or bar scales. Note that with this unit's differential-pressure drain the regulation range is 0.15-0.9 MPa (20-130 psi); the manual-drain version reaches down to 0.05 MPa (7 psi) if you need lower set pressures.
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Request a Quote for Airtac GFR Filter Regulator GFR400C15NK
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