Description
Siemens 257-02026B 2-way normally close valve used to control fluids in the HVAC system precisely. This robust stainless steel valve is a dependable and long life valve in conditions. It is effective in regulation of fluid flow a 1/2″ dimension in accordance with a flow coefficient of 4.0Cv based on 3 to 8 PSI pressure difference the valve closes with a spring inside the pressure downstream then overcomes the spring’s pressure. When the pressure increases, the spring compressing, allowing fluid to flow, opening the valve. This valve allows precise control of the flow rates of fluid, not only responding directly to changes in system conditions, but enabling the precise control of thermostats, boilers, and oil heaters.
