| Brand: | Bermad |
| Category: | Control Valves, 700 Series |
| Size Range: | 50-600mm |
| Connection: | EN: 50-400mm - Flanged ES: 65-600mm - Flanged |
| Engineering Data: |
Product Description
Hydraulically operated, diaphragm actuated, pressure-reducing control valve that reduces higher upstream pressure to lower downstream pressure at a fixed ratio. The fixed pressure-reducing ratio is determined with regard to valve size and plug type.
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 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 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 the size and dimensions requirements of various standards.
Features and Benefits
- Designed to - stand up to the toughest conditions
- Excellent anti-cavitation properties
- Wide flow range
- High stability
- Drip tight sealing
- Double chamber design
- Moderated valve reaction
- Protected diaphragm
- Optional operation in very low pressure
- Optional operation in very low pressure
- Flexible design - Easy addition of features
- Obstacle-free flow pass
- V-Port Throttling Plug (Optional) - Very stable at low flow
- Compatible with various standards
- High-quality materials
- In-line serviceable - Easy maintenance
Major Additional Features
- Solenoid control – 720-PD-55
- Closing & Opening speed control – 720-PD-03
- Emergency pressure reducing valve – 720-PD-59
- Pressure sustaining – 723-PD
Typical Installation
Bermad - Model 720-PD - Typical Installation
Technical Data
Operation
Bermad - Model 720-PD - Operation
Main Valve
Valve Patterns: “Y” (Globe)
Size Range:
50-600mm
Pressure Rating: 16 bar - with higher pressure options available.
End Connections:
EN: 50-400mm - Flanged
ES: 65-600mm - Flanged
Plug Types: Flat disc, V-port, Single cavitation cage
Temperature Rating: 60°C, for Coldwater applications
Optional higher temperature: Available on request
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: Dark blue Fusion bonded epoxy
Control System
Standard Materials:
Accessories: Stainless Steel, Bronze & Brass
Tubing: Stainless Steel or Copper
Fittings: Stainless Steel or Brass
Reduction Ratios Table
Bermad - Model 720-PD - Reduction Ratios Table
Notes:
- Recommended continuous flow velocity: 0.1-6.0 m /sec
- Minimum operating pressure: 0.7 bar.
Technical Specifications
For technical specifications (Flow charts, valve characteristics, dimensions, etc.) - Please refer to the Engineering Data:
Bermad - Model 700 - Sigma EN/ES - Engineering Data
For Spare Parts & Repair Kits - Please refer to the base model:
Due to the wide range of options available and criteria for correct model selection, pricing and configuration are available on application only.
Please consult with Deeco engineers for more information.
