Double chambered, hydraulically operated, solenoid controlled valve that either
opens fully, regardless of valve differential pressure, or shuts off in response to
electric signal. This valve is especially useful in very low pressure applications and in
corrosive fluid systems that are controlled by external fresh water or compressed
air. Normally open (NO), normally closed (NC) or LATCH models are available.
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.

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 – Very stable at low flow
Cֺompatible with various standards
Hֺigh quality materials
Iֺn-line serviceable – Easy maintenance

Oֺpening & Closing speed control – 710-03-B
Cֺlosing & opening signal (limit switch) – 710-BSS
Rֺelief override – 710-3Q-B
Fֺlow over the seat (fail-safe close) – 710-BO
Cֺlosing surge prevention – 710-49-B
Iֺndependent Check Feature – 710-2S
See relevant BERMAD publications.

English WW 710-B SIGMA Product Page
English WW 700 SIGMA Engineering
English WW 700 SIGMA Ordering Guide