Hydraulically operated, diaphragm actuated burst control & pressure reducing
control valve with two independent functions: When flow is below setting,
it reduces higher upstream pressure to lower pre-set downstream pressure,
regardless of varying demand or upstream pressure. Upon sensing flow in excess
of setting, it shuts off drip tight and locks until manually reset.
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 (Optional) – Very stable at low flow
Cֺompatible with various standards
Hֺigh quality materials
Iֺn-line serviceable – Easy maintenance

Sֺolenoid control – 792-55-U
Eֺlectric override – 792-59-U
Dֺownstream over-pressure guard – 792-48-U
Eֺlectronic multi-level setting, Type 4T – 792-4T-U
Iֺndependent Check Feature – 792-U-2S
See relevant BERMAD publication

English WW 792-U SIGMA Product Page
English WW 700 SIGMA Engineering
English WW 700 SIGMA Ordering Guide