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        Thermostatic Element can transfer heat energy into mechanical energy. It has a function that can induce temperature change and rapidly automatically comes out mechanical movement. Because of having applied the thermal expansion material inside, so there is no any ambient influence when mechanical movement happens. It is a key part which has the advantages with all kinds of temperature regulating and control systems, such as wide temperature regulating range, exactly temperature control, simple structure, reliable capability, etc. It has been widely application in many fields such as automobile industry, building heating, sanitary ware, air-conditioner, industrial automatic control,  fire protection, household appliances, solar water heater, petrochemical industry, shipping, safeguard, aviation and space etc.

        1.Thermostatic Element Structure Type

        Diaphragm Type Capsule Type Piston Type

        2. Operation Principle

        The Thermostatic Wax that has been sealed in shell body induces expansion by a given temperature, and inner rubber seal part drives its handspike to move under expansion pressure to realize a transition from thermal energy into mechanical energy. The Thermostatic Wax brings an upward movement to its handspike, and automatic control of various function are realized by use of upward movement of handspike. The return of  handspike is accomplished by negative load in a given returned temperature.

        3. Characteristic

        (1)Small body size, occupied limited space, and its size and structure may be designed in according to the location where needs to work.
        (2)Temperature control is reliable and nicety
        (3)No shaking and tranquilization in working condition.
        (4)The element doesn’t need special maintenance.
        (5)Working life is long.

        4.Main Technical Parameters

        (1)Handspike’s height may be confirmed by drawing and technical parameters
        (2)Handspike movement is relatives to the temperature range of the element, and the effective distance range is from 1.5mm to 20 mm.
        (3)Temperature control range of thermostatic element is between –20 ~ 230℃.
        (4)Lag phenomenon is generally 1 ~ 2℃. Friction of each component part and lag of the component part temperature cause a lag phenomenon. Because there is a difference between up and down curve of traveling distance.
        (5)Loading force of thermostatic element is difference, it depends on its’ shell size.

        We can offer technical support and help with making the thermostatic element.

        5. All Kinds of Thermostatic Element






        Automobile Industry


        Thermostatic Valve


        Building, Heating & Ventilating


        Safeguard, Fireproofing




        Electronic Switch


        Industry Dynamic Control




        Solar Energy Series



           YNCQ Series  Thermostatic Element for Automobile

        Example: Automobile Thermostat (YNCQ-1), Motorcycle Enriching Valve (YNCQ-2), Diesel Engine Automatic Regulator (YNCQ-3)

        Temperature Control Range (℃)

        Handspike Travel (mm)



        (2) YNCN Series   Thermostatic Element for Building Heating

        Air Temperature Control for Automatic Regulating Room Temperature, & Ventilating Control, etc.

        Example: Central Heating Temperature Control Valve (YNCN-1),etc.

        Temperature Control Range (℃)

        Handspike Travel (mm)



        (3) YNCJ Series   Thermostatic Element for Sanitary Ware

        Water Temperature Control, Mixing Water Control, etc

        Example: Thermostatic Valve (YNCJ-1),Mixing Thermostatic Valve (YNCJ-2), Preventing Scald Valve(YNCJ-3),etc

        Temperature Control Range (℃)

        Handspike Travel (mm)



        (4) YNCZ Series   Thermostatic Element for Automation

        Example:  Temperature Control Switch (YNCZ-1), 12V, 24V, 220V PTC (Temperature Resistance) Thermal Linearity Remote Valve (YNCZ-2)

         Temperature Control Range (℃)

        Handspike Travel (mm)



        (5)YNCF Series   Thermostatic Element for Fireproofing

        Example: Alarm (YNCF-1), Automatic Sprayer (YNCF-2), etc.

        Temperature Control Range Handspike Travel (mm)
        50~80 ≥1.5~10
        (6)YNCD Series   Thermostatic Element for Electronic Switch

        Example: Electronic Control Switch (YNCD-1), etc.

        Temperature Control Range (℃)

        Handspike Travel (mm)



        Fushun Yongning Industry Co., Ltd . Address:NO.21 Yulin Road Xinfu District, Fushun,Liaoning
        Tel:86-24-52440498 Fax:86-24-52437193 E-mail:ningliu@ynwax.com post:113008