PRESSURE RELIEF/ SUSTAINING VALVE Model 730 EN/ES

Pressure relief/sustaining hydraulically operated control valve that can fulfill either
of two separate functions: When installed in-line, it sustains minimum pre-set,
upstream (back) pressure regardless of fluctuating flow or varying downstream
pressure. When installed as a “branched from the line” circulation valve it relieves
excessive line pressure when above maximum pre-set.
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

Pֺressure sustaining and reducing valve – 723
Dֺifferential pressure sustaining – 736
Qֺuick pressure relief valve – 73Q
3ֺ-Way control – 730-X
Sֺolenoid control – 730-55
Hֺydraulic check feature – 730-20
Aֺnti-cavitation cage – 730-C2
Hֺigh sensitivity pilot – 730-12
Eֺlectrically selected multi-level setting – 730-45
Lֺevel control and pressure sustaining valve – 753
Pֺump control and pressure sustaining valve – 743
Sֺee relevant BERMAD publication

English WW 730 SIGMA Product Page
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English WW 700 SIGMA Engineering
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English WW 700 SIGMA Ordering Guide
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