Application Background
Secondary water supply systems in high-rise buildings represent critical infrastructure in modern urban construction, where their stability and reliability directly impact residents’ water safety and quality of life. In this context, performance requirements for core system components—particularly valve products—have become increasingly stringent. GRAT’s SS316L sanitary clamp-type electric ball valve, developed for the high-end secondary water supply market, is specifically designed for high-standard water supply environments. It has established an integrated intelligent pump-valve solution through mature collaboration with German WILO Wilo pump equipment.
Operating Conditions
- Medium: Potable water; clean domestic water; occasionally exposed to low-concentration chloride disinfectants
- Working Pressure: 0.6-1.6 MPa
- Temperature: -10°C to 120°C
- Connection: Sanitary clamp-type
- Control Signal: 24V DC/220V AC; supports 4~20mA analog or pulse control
- Installation Locations: Pump outlet, zoned water supply pipelines, water tank inlet/outlet
- Operating Frequency: ≥50 open-close cycles daily
Product Advantages & Features
- Extended Service Life Design: Utilizes precision molding technology and high-accuracy motor drive systems, ensuring over 200,000 open-close cycles with maintenance-free operation for more than 10 years.
- Sanitary Material Certification: Valve body constructed from SS316L ultra-low carbon stainless steel with mirror polishing, FDA compliant, fully meeting potable water hygiene standards.
- Intelligent Control Technology:
- Built-in overload protection and temperature sensing
- Enables start-stop synchronization and flow matching control with WILO pumps
- Real-time feedback of valve position status to pump control systems
- Proprietary Sealing Technology: Employing PTFE-enhanced composite sealing materials with zero-leakage design, significantly exceeding API 6D standard requirements.
- Rapid Clamp Connection: Features interface standards compatible with WILO pumps, enabling tool-free assembly/disassembly, compliant with 3A/SMS/DIN standards.
Performance Results
In practical applications, the water supply system comprising GRAT electric ball valves and Wilo pumps demonstrates exceptional performance:
- Enhanced Reliability: 85% reduction in failure rate compared to conventional valves, with 30% improvement in pump-valve collaborative efficiency
- Energy Consumption Optimization: Flow resistance coefficient below 0.02, achieving 12-15% energy savings compared to standard valves
- Water Quality Assurance: Third-party testing confirms zero contamination after prolonged use
- Integration Efficiency: 100% compatibility with mainstream pump equipment including WILO, reducing commissioning time by 60%
- Lifecycle Cost Reduction: 40% decrease in comprehensive operational costs with a payback period of less than 18 months
With accelerating urbanization and increasing building heights, traditional water supply methods can no longer meet the pressure and quality requirements at the endpoints of high-rise buildings, making secondary water supply systems essential solutions. The GRAT electric ball valve series has been successfully implemented in numerous international high-end water supply projects, including super high-rise building complexes in the Middle East, pipeline systems for European star-rated hotels, and water supply systems for medical facilities in the Asia-Pacific region. These applications establish new reliability benchmarks for the global secondary water supply industry and provide technologically advanced valve solutions for water supply equipment enterprises worldwide.
