Diaphragm valve 405 series

hydraulically-operatedfor waterin-line

Product overview
The BERMAD 400 Series 405 is a line-pressure operated hydraulic control valve with a full-bore seat and an unobstructed flow path. Internal components form a one-piece elastomeric assembly with a vulcanized flexible diaphragm and radial seal disc. The diaphragm is balanced and peripherally supported to prevent distortion and ensure controlled actuation and extended service life. The design is suitable for potable water applications.

Features & Benefits

• Line-pressure driven – independent operation
• Modular design – easy addition of control features and accessories
• Hydro-efficient globe design
  • Unobstructed flow path
  • Single moving part for simplified operation
  • Non-turbulent flow for stable control
  • High flow capacity
• Fully supported and balanced diaphragm
  • Progressive valve closing for stable regulation
  • Prevents diaphragm distortion and protects elastomer
• In-line serviceable
  • Fast maintenance without removing the valve from the pipeline
  • Minimal downtime for operations

Typical applications

• Building services and construction water systems
• Municipal waterworks
• Pressure reducing and pressure sustaining
• Level control for reservoirs and tanks
• Pump circulation and pump protection
• Pressure relief and safety functions
• HVAC systems for pressure balancing
• On/Off service

Technical specifications

• Manufacturer series: BERMAD 400 Series
• Model / designation: 405
• Type: Hydraulic control valve, full-bore globe with diaphragm
• Design: Full-bore seat, unobstructed flow path, hydro-efficient globe
• Internal assembly: One-piece elastomeric assembly; vulcanized diaphragm with radial seal disc
• Operation: Line-pressure driven, independent operation
• Flow characteristics: High capacity, non-turbulent flow, single moving part
• Serviceability: In-line serviceable for fast maintenance
• Compatibility: Suitable for potable water use
• Typical segments: Buildings & Construction; Waterworks; Industrial water systems
• Internal product reference (page): 30378