| Brand: | Bermad |
| Category: | Control Valves, 700 Series |
| Size Range: | 50-600mm |
| Connection: | 50 - 80mm - Threaded Female BSPT - Angle Pattern |
| Engineering Data: | |
| Other Options: |
Product Description
Hydraulically operated, diaphragm actuated quick pressure relief valve that relieves excessive system pressure when such pressure rises above a pre-set value. It responds immediately, accurately, and with high repeatability to a rise in system pressure by opening fully. It also provides smooth drip-tight closing. BERMAD 700 series valves are hydraulically operated globe valves available in either standard oblique (Y) or angle (A) pattern design. They have a full-bore hydrodynamic body providing an unobstructed flow path, with a seat assembly and double chamber unitized actuator that can be disassembled from the body as a separate integral unit
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
- 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
- Flow stem – 73Q-M
- Position indication – 73Q-S
Typical Installation
Bermad - Model-73Q - Typical Installation
Technical Data
Operation
Closed
This drawing refers to 40-200 mm sized valves only. For other sizes please refer to the Model’s IOM.
Open
This drawing refers to 40-200 mm sized valves only. For other sizes please refer to the Model’s IOM.
Main Valve
Valve Patterns: “A” (angle)
Size Range: 50-80mm - Y Pattern 50-600mm
Pressure Rating: 16 bar - with higher pressure options available.
End Connections:
Threaded Female BSPT
Others: Available on request
Temperature Rating: 60°C for cold water 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
Pilot Standard Materials:
Body: Stainless Steel, Bronze or Brass
Elastomers: Synthetic Rubber
Spring: Stainless Steel
Internals: Stainless Steel
Pilot Options:
Consult Deeco.
Notes
- Main pipe diameter, pressure rating, flow rate and relief pressure are required for optimal sizing
- Recommended continuous flow velocity: 0.3-15 m /sec.
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.
