What are the different types of thermostatic valves?

Written by Editorial Team | Last Updated: August 2026

Thermostatic valves regulate fluid flow, temperature, or pressure automatically without requiring external electrical power sources. Thermostatic Radiator Valves (TRVs) are widely used in home heating systems to control individual room temperatures by adjusting hot water flow based on ambient air. Thermostatic Mixing Valves (TMVs) blend hot and cold water supplies to maintain a safe, constant output temperature, protecting users from scalding in domestic plumbing. Thermostatic Expansion Valves (TXVs) are critical components in refrigeration and air conditioning circuits, metering precise amounts of refrigerant into evaporators. Additionally, wax-pellet and fluid-filled automotive thermostatic valves regulate engine coolant loops dynamically based on operating heat loads.

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