Plug-in Thermostats

Mechanical or electrical, and always designed to specific application and interface requirements.



Our plug-in thermostats are mechanical or electrical and have only one housing part. The second housing part is provided by a mating part in the application, either engine head or block, coolant pump, or other devices with fluid flow.

The thermostat function is available in the final assembly. This is cost effective because mating parts provide sub-functions, like guiding flow, providing a bypass valve seat. They are always designed to a specific application and interface requirements.

Technical Data

Main Thermostat (ThM) :
for coolant temperature control
STO 88°C … 95°C

Block Flow Thermostat (ThB) :
disables and controls the block flow, dependent on temperature
STO 90°C … 105°C
optional pressure relief function