Seat Switching Valves
With its low flow resistance and compact design, the Pierburg poppet valve offers the ideal solution for a wide range of vehicle applications. Thanks to the modular design, connectors as well as hydraulic and mechanical connections can be designed individually according to customer requirements.
Furthermore, with the option for direct motor mounting, the Pierburg poppet valve can be used as a cost-efficient block valve for split cooling applications. The smallest leaks can be realized by means of the optionally available pressure equalization. Moreover, our valves offer best-in-class durability with more than 8 million operations.
Thanks to the plastic overmolded magnetic coil, we offer the best possible corrosion protection.
Portfolio Seat Switching Valves
Coolant poppet valve
2-way coolant poppet valve

2W CSV
Highlights
- As a poppet valve, best-in-class pressure drop with lowest leaks
- Fail safe open or closed freely selectable thanks to modular principle for "high flow"
- Compact installation space and lowest weight
- Vibration-resistant and can be mounted directly without additional bracket
- Flow rate range freely selectable – precise selection according to application requirements
TECHNICAL DATA | Standard CSV | High Flow CSV |
Operating voltage | 12/24 V | 12/24 V |
Ambient temperatures | -40 to +140°C | -40 to +140°C |
Media temperatures | -40 to +140°C | -40 to +140°C |
Flow rate | up to 25 l/min | up to 50 l/min |
Pressure drop | ~170 mbar at 25 l/min | up to < 75 mbar at 25 l/min |
Max. differential pressure closed | up to 1.5 bar | up to 2.0 bar |
Internal leakage | < 0.05 l/min at 1 bar rel. | < 0.05 l/min bei 1.8 bar rel. |
3-way coolant poppet valve

3W CSV
Highlights
- As poppet valve, best-in-class pressure drop and max. differential pressure realizable
- Fail safe position freely selectable thanks to modular principle
- Compact installation space and lowest weight
- Vibration-resistant and can be mounted directly without additional bracket
- Flow rate range freely selectable – precise selection according to application requirements
- "High flow" valve available with 1 input and 2 outputs as well as 2 inputs and 1 output
TECHNICAL DATA | Standard CSV | High Flow CSV |
Operating voltage | 12/24 V | 12/24 V |
Ambient temperatures | -40 to +140°C | -40 to +140°C |
Media temperatures | -40 to +140°C | -40 to +140°C |
Flow rate | up to 25 l/min | up to 50 l/min |
Pressure drop | < 300 mbar at 25 l/min | < 200 mbar at 25 l/min |
Max. differential pressure closed | up to 0.5 bar | up to 2.0 bar |
Internal leakage | < 0.05 l/min at 0.5 bar rel. | < 0.05 l/min at 1.8 bar rel. |
2-way switching valve with position feedback

2W CSVi
Highlights
- Integrated position feedback with SENT/ANALOG output
- Fail safe open or closed freely selectable thanks to modular principle for "high flow"
- Compact installation space and lowest weight
- Flow rate range freely selectable – precise selection according to application requirements
TECHNICAL DATA | Standard CSV | High Flow CSV |
Operating voltage | 12/24 V | 12/24 V |
Ambient temperatures | -40 to +140°C | -40 °C to +140 °C |
Media temperatures | -40 to +140 °C | -40 °C to +140 °C |
Flow rate | up to 25 l/min | up to 50 l/min |
Pressure drop | ~170 mbar at 25 l/min | up to < 75 mbar at 25 l/min |
Max. differential pressure closed | up to 1.5 bar | up to 2.0 bar |
Internal leakage | < 0.05 l/min at 1.0 bar rel. | < 0.05 l/min at 1.8 bar rel. |
3-way switching valve with position feedback

3W CSVi
Highlights
- Integrated position feedback with SENT/ANALOG output
- Fail safe open or closed freely selectable thanks to modular principle for "high flow"
- Compact installation space and lowest weight
- Flow rate range freely selectable – precise selection according to application requirements
TECHNICAL DATA | Standard CSV | High Flow CSV |
Operating voltage | 12/24 V | 12/24 V |
Ambient temperatures | -40 to +140°C | -40 to +140 °C |
Media temperatures | -40 to +140°C | -40 to +140°C |
Flow rate | up to 25 l/min | up to 50 l/min |
Pressure drop | < 300 mbar at 25 l/min | < 200 mbar at 25 l/min |
Max. differential pressure closed | up to 0.5 bar | up to 1.8 bar |
Internal leakage | < 0.05 l/min at 0.5 bar rel. | < 0.05 l/min at 1.8 bar rel. |