| Brand: | Bermad |
| Category: | Control Valves, 700 Series |
| Size Range: | 500-900mm |
| Connection: | Flanged |
Product Description
The BERMAD 700 Series large-size control valves are hydraulically operated, and diaphragm-actuated type. Unique hydro-dynamic globe valve design with a special open plug provides high flow capabilities. The valves are available in the standard configuration or with an Independent Flow Check code “2S”. These valves are designed for large flow applications (On-off valve, pressure reducing, pressure sustaining, pump control, level control, check valve, flow control, burst control, emergency shut-off valve, etc.), where precise control is needed.
Features and Options
- Hydrodynamic wide globe valve body provides:
- Higher flow (Kv; Cv) than standard globe valves
- Higher resistance to cavitation damage
- In-line serviceable
- Valves are suitable for working with all types of command: Hydraulic, Electric and Pneumatic
- Self-operated valves that can work without an external source of power.
- Wide range of options and accessories:
- One-way or two-way flow direction
- V-Port (optional)
- Cavitation cage (optional)
- Visual position indicator
- Limit switches
- Analog opening output
- Large selection of control accessories
- Large inspection and service ports (700-M5M, 700-M5L)
Technical Data
Independent Check Feature
Additional feature code 2S
The Independent Check Feature is an integral, lift-type, non-slam check mechanism that opens to allow flow in the required direction and smoothly closes drip tight to prevent backflow.
The Independent Check Feature is used on various system applications such as:
- Pump control valves
- One-way level control valves
- One-way zone backup valves
- Pressure regulating valves
Principle of Operation
Bermad - 700 Large Series - Principal of Operation
Main Valve
Valve Pattern: Globe
Size Range: DN 500-900
Pressure Rating: PN10, 16 & 25 ANSI Class #150; ANSI Class #300 (Consult Deeco)
End Connections: Flanged
Temperature: Water up to 60°C, for Cold water applications
Coating: Fusion Bonded Epoxy, dark blue, certified for drinking water applications, outside UV protection
Valve Plugs Characteristics
Kv;Cv Valve Travel Graph
Bermad - 700 Large Series - Valve Plugs Characteristics
Valve Travel
Bermad - 700 Large Series - Valve Travel
Flow Factors
Bermad - 700 Large Series - Flow Factors
Differential Pressure & Flow Calculation
Valve flow coefficient, Kv = Q √Gf/ ∆P
Where:
Kv = Valve flow coefficient (flow in m3/h at 1bar ∆P)
Q = Flow rate (m3 /h)
∆P = Differential pressure (bar)
Gf = Liquid specific gravity (Water = 1.0)
Practical formulas for water:
Q= Kv √∆P
∆P =(Q/Kv)²
Flow Chart
Bermad - 700 Large Series - Flow Chart
Technical Specifications
Dimensions Table
Notes: Length according to ISO 5752-1 Weight calculated for the heaviest flange
Weight and height with cradle
Bermad - 700 Large Series - Weight and Height with cradle
Control Chamber Displacement
Bermad - 700 Large Series - Control Chamber Displacement
Control Ports
Rc = BSPT
Material Specifications 700-M5 / 700-M5M / 700-M5L
Bermad - 700 Large Series - Material Specifications Table
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.
