Diaphragm valve WW-757-80-U

hydraulicflow controlpilot

Hydraulically operated control valve that controls reservoir filling and reservoir level. During filling, the valve limits the flow to a pre-set maximum, regardless of fluctuating upstream pressure or reservoir level and protects the valve from cavitation damage. The valve shuts off at a pre-set reservoir high level and fully opens in response to an approximately one meter (3 ft) level drop, as sensed by the 3-Way altitude pilot mounted on the main valve. BERMAD 700 SIGMA EN/ES series valves are hydraulic, oblique pattern, globe valves with a raised seat assembly and double chamber unitized actuator, that can be disassembled from the body as a separate integral unit. The valves hydrodynamic body is designed for unobstructed flow path and provides excellent and highly effective modulation capacity for high differential pressure applications. The valves are available in the standard configuration or with an Independent Check Feature code “2S”. The 700 SIGMA EN/ES Valves operate under difficult operation conditions with minimal cavitation and noise. They meet size and dimensions requirements of various standards. PRODUCT FEATURES & BENEFITS Dֺesigned to – stand up to the toughest conditions Excellent anti-cavitation properties Wide flow range High stability and accuracy Drip tight sealing Dֺouble chamber design Moderated valve reaction Protected diaphragm Optional operation in very low pressure Moderated closing curve Fֺlexible design – Easy addition of features Oֺbstacle free flow pass Vֺ-Port Throttling Plug (Optional) – Very stable at low flow Cֺompatible with various standards Hֺigh quality materials Iֺn-line serviceable – Easy maintenance