Bermad - Model 720-X - Pressure Reducing Valve

Hydraulically operated, pressure-reducing control valve that reduces higher upstream pressure to lower constant downstream pressure, regardless of fluctuating demand or varying upstream pressure.

This valve is a double chamber configuration using 3-way control, being extremely responsive regardless of operating conditions, allowing full opening without the risk of hydraulic lockout.

BERMAD 700 SIGMA ES/EN series valves are hydraulic, oblique pattern, globe valves with seat assembly and double chamber unitized actuator, that can be disassembled from the body as a separate integral unit.

The valve's hydrodynamic body is designed for an unobstructed flow path and provides excellent and highly effective modulation capacity for high differential pressure applications. The valves operate under difficult operation conditions with minimal cavitation and noise. They meet all flange standards size and dimensions standard requirements.

Features and Benefits

• ֺ Designed to
  • Stand up to the toughest conditions
  • Excellent anti-cavitation properties
  • Wide flow range
  • High stability and accuracy
  • Drip tight sealing
• Double chamber design
  • Moderated valve reaction
  • Protected diaphragm
  • Optional operation in very low pressure
  • Moderated closing curve avoids closing surge
• Flexible design - Easy addition/change of features
• Obstacle free flow pass
• V-Port Throttling Plug - Very stable at low flow
• Compatible with various standards
• High-qualityObstacle-freey materials
• ֺ In-line serviceable - Easy maintenance

Major Additional Features

• Fix Proportion PRV – 720-PD
• Pressure management valve – 7PM
• 2-way control – 720
• Anti cavitation cage – 720-C2
• Safety valve – 720-TC
• Independent drop check – 720-2S
• Check valve – 720-20
• Solenoid control – 720-55
• Electrically selected multi-level setting – 720-45
• High sensitivity pilot – 720-12
• Downstream over pressure guard – 720-48

Typical Installation

Operation

Main Valve

Valve Pattern: “Y” (Globe)

Size Range: 50-600mm

Pressure Rating: 16 bar - with higher pressure options available.

End Connections:
EN: 50-400mm

ES: 65-600mm

Plug Types: Flat disc, V-port, Cavitation cage

Temperature Rating: Water up to 60°C

Standard Materials:

Body & actuator: Ductile Iron

Bolts, nuts & studs: Stainless Steel

Internals: Stainless Steel, Tin Bronze & Coated Steel

Diaphragm: Fabric-reinforced synthetic rubber

Seals: Synthetic rubber

Coating:

Fusion Bonded Epoxy, RAL5017 (Blue) Drinking water approved to NSF61, WRAS, DVGW, AS4020. Polyester powder coating, UV resistant, RAL5010 (Blue) Drinking water approved to WRAS.

Control System

Standard Materials:

Accessories: Stainless Steel, Bronze & Brass

Tubing: Stainless Steel or Copper

Fittings: Stainless Steel or Brass

Pilot Standard Materials:

Body: Stainless Steel, Bronze or Brass

Elastomers: Synthetic Rubber

Spring: Stainless Steel

Internals: Stainless Steel

Pilot Options:

Various pilots and calibration springs are available. Select according to valve size and operating conditions. For more details check pressure reducing pilots product page.

Notes:

• Inlet pressure, outlet pressure and flow rate are required for optimal sizing and cavitation analysis.
• Recommended continuous flow velocity: 0.1-6.0m/sec.
• For lower pressure requirements consult Deeco.

For technical specifications (Flow charts, valve characteristics, dimensions, etc.) - Please refer to the Engineering Data:

Bermad - Model 700 - Sigma EN/ES - Engineering Data