Wax Elements

A wax element is a simple negative feedback controller. The wax element operates as a sensor, controller and actuator in a closed control loop.

Overview

What are Wax Elements

Our wax elements are aimed at the automotive, housing and building markets, for coolant, gas-oil and oil regulation. We use different internal sealing technologies for our wax elements, including rubber bag and membrane seal. An external control device is unnecessary.

The self-regulating and low-cost linear actuator reacts to temperature.
The encapsulated paraffin-wax acts on a stainless-steel pin.
Our conventional and heated thermostats have an identical structure and a simple design.

TAILORED TO YOUR NEEDS

A RANGE OF ACTUATION FORCES & PIN DIAMETERS

We can provide tailor-made wax blends designed to meet the needs of an application STO, stroke and gradient (see applications below).

Our wax elements are suitable for a wide range of actuation forces between 50N to 500N featured by different pin diameters. They have a wide working range of maximum stroke, between 3mm to 20mm.

OUR THREE MATERIALS

MATCH YOUR CORROSION RESISTANCE

Copper

Brass

Stainless Steel

Our wax elements are available as pure mechanical (self-regulating based on ambient temperature) and as electrical (reacting to ambient temperature and on an electric power supply).

Electric heated wax elements

A RANGE OF EFFICIENCY SAVINGS

Our electric heated wax elements have the potential for fuel saving (a higher temperature means less friction); the potential to improve the emission valves and driving comfort; a better response time; and increased engine power due to reduced temperature of the intake manifold in case of high engine overload.

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We design, develop and supply heating wax elements for various uses including a wide range of automotive coolant thermostats, oil diverters, household and building under floor heating control PTC wax elements, thermostatic radiator valves, as well as mixing valves and three-way valves. The high speed automated manufacturing processes ensure Thermal Management Solutions Group products are supplied at world-class quality levels and competitive pricing to an international customer base.

PTC wax elements

OPENING & CLOSING FOR YOU

The PTC wax elements are integrated into electrical thermal actuators to manage floor/wall heating, roof air-conditioning and central heating systems. The products enable the opening and closure of a valve according to the information from the central control panel.

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The products enable water temperature regulation in mixing valves and the opening and closing of four-way valves.

Technical Specifications

Technical Data Applications
Most typical pin sizes :
Ø3mm
Ø4mm
Ø5mm
Hysteresis :
<4°C
<5°C
<7°C
Stroke working range :
8mm (3mm … 16mm)
Durability :
>30k full stroke cycles
Cooling circuit :
80°C < STO < 105°C
Oil circuit :
90°C < STO < 110°C
Fuel, oil, coolant :
0°C < STO < 50°C