Feed Water Bypass Valve
Feed Water Bypass Valve are used in power generation plants and industrial applications
Feed Water Bypass Valve Basic Character:
• These valves are designed to bypass high pressure feed water around a group of heaters in the event of high-water level in the shell caused by a defective tube, weld or drain system.
• The time available to give protection to a turbine in modern feed systems is short but these valves can operate in approximately 5 seconds in a 300 mm bore pipe system with the minimum of hydraulic shock.
• Protection is achieved in the system by installing fast closing tee and changeover valves in the pipework around a heater or group of heaters.
• These valves are equally applicable in new or established stations.
• The motive power employed is the feed water pressure and the system is designed to ‘fail safe’ in that the heaters will be bypassed if either electric or pneumatic supplies fail.
