Temperature Safety Elements

Sigma Fusible Plugs are commonly known as Temperature Safety Elements (TSE) within the safety system industry. All Fusible Plugs have a core of fusible material that melts due to intense heat of a fire or other heat source. They maintain operating pressure within the control circuit until the temperature of the Fusible Plug is exceeded. Once the low temperature fusible alloy material melts, the ESD control circuit experiences a loss of operating pressure, which initiates an Emergency Shutdown sequence or Safety Valve closure. Fusible Plugs are an integral part of most pneumatic ESD control circuits.