Hydraulically operated, diaphragm actuated, burst control valve that senses flow levels. When it senses flow in excess of settings, it shuts off and locks drip tight until manually reset. As long as flow is lower than settings, the valve remains fully open, minimizing head loss. A flow stem enables limiting valve opening stroke, precisely adjusting the required flow through the 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

Typical Product Applications

Cֺlosing at pressure drop – 790-91
Pֺressure reducing – 792-U
Sֺolenoid control – 790-55-M
Eֺlectric override – 790-59-M
Iֺndependent Check Feature – 790-M-2S
See relevant BERMAD publication.