Steam ball valves are typically controlled with an electric actuator. Steam ball valvesĪ ball valve is a quarter-turn operated valve designed to be 100% opened or 100% closed and used to isolate steam in a pipe completely. Two-port valves restrict steam flow through them, whereas three-port valves can add or redirect the steam passing through them. Also, a steam valve can either be a two-port or three-port valve. Linear-type valves have a sliding-stem design that pushes an element to open or closed positions.
Rotary type valves are also called quarter-turn valves, and these valves require a rotary motion to open and close. The various valve types can have either linear or rotary spindle movement. A pneumatic valve is actuated by a pneumatic cylinder that opens and closes the valve.Electric devices operate under electric actuators like solenoids.Manual devices are operated through a hand-operated crank or wheel.Steam valves are actuated manually or automated and depend on one of the following mechanisms: The operating temperature and pressure play a significant role in selecting valve parts from the application. Types of valves used for steam and hot water Rubber-based materials like EPDM, NBR, and FKM and plastic-based materials like PTFE and PA are used for the gasket, packing, and seal of the steam valve. Metallic materials like cast iron, alloy steel, bronze, copper, steel, stainless steel, and brass are used for the steam valve body and the internal components like the ball and disc. The materials used in the housing and seal of a valve should be compatible with the media flowing through the valve else, the valve material degrades over time. Since the temperature and pressure of steam are mutually related, the temperature is also controlled by controlling steam pressure. Steam has a higher latent heat at lower pressure, increasing energy efficiency. Industrial processes use steam at low pressures frequently. Steam valves control the pressure level and flow rate of steam and heated water. Hence in a power plant, the steam pipeline requires some form of control to reduce the temperature and pressure of the inlet stream for process application. Industrial processes typically use steam at lower temperatures and pressures. Read our article on steam hoses to know more about the formation and various types of steam. Steam is an excellent working medium in thermodynamic systems and can convey heat across thermal applications after fulfilling its duty as a conducting agent. View our online selection of valves for steam applications!
0 kommentar(er)
