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Hydraulically operated, deep well pump control valve that adds advanced active check valve logic to standard pump systems. The valve branches off the main line and is synchronized with the pump’s electric control; it opens during pump startup and shutdown, thereby preventing pipeline surges.It also prevents startup flow debris (such as sand and pebbles) from penetrating into the system. 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.
Compatible with various standards
Hֺigh quality materials
Iֺn-line serviceable – Easy maintenance

Typical Product Applications

Rֺelief override – 745-3Q
Eֺlectronic control – 745-18
Pֺump circulation and flow control valve – 749-U
Pֺump Circulation and Pressure Sustaining Control Valve – 748
Iֺndependent Check Feature – 745-2S
See relevant BERMAD publication