Custom High-Strength Cast Steel Vacuum Breaker Valve with Sensitive Actuation Mechanism and Anti-Corrosion Components for Hydropower Plants
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
Custom-Manufactured Hydro-Turbine Vacuum Breaker Valve for Hydropower Plants
During load rejection or rapid shutdown of hydro-turbine units, water flow in spiral case and pressure pipeline drops sharply, creating internal negative-pressure vacuum. Excessive vacuum may cause spiral-case shell collapse, pipeline deformation, seal damage and other major equipment accidents.
The vacuum breaker valve is a dedicated anti-vacuum safety device. When internal pressure drops to preset negative-pressure threshold, the valve opens automatically to inject outside air, quickly eliminating vacuum. When pipeline pressure returns to positive pressure, the valve closes tightly to avoid water spouting out, ensuring safe operation of water-conveyance system.
We deliver tailor-made vacuum breaker valve solutions strictly based on customer drawings, nominal diameter, actuation opening pressure, flange standard and actual site installation conditions.
Main Technical Features
- High-strength cast steel valve body: Optimized flow-passage structure, good rigidity, resistant to water pressure impact, adapts to long-term humid hydropower station environment
- Sensitive and reliable actuation mechanism: Optional counterweight type or spring-loaded type. Trigger opening pressure can be precisely customized, quick response to vacuum signal
- High-performance sealing assembly: Reliable sealing face, tight closure under normal positive-pressure working condition, effectively prevents water spraying outward
- Anti-corrosion internal components: Key moving parts adopt anti-rust and anti-erosion treatment, reduce jamming risk caused by moisture and impurity, improve operation stability
- Full-range customization service: Nominal diameter, set opening vacuum value, flange standard, connection dimension and installation angle can be customized for new-build, retrofit and overhaul projects. Every finished valve passes air-tightness inspection and full-opening-closing functional test before ex-factory
Application Scope
- Safety valve equipment supply for newly-built hydropower stations
- Spiral case & water conveyance system upgrading and retrofitting of existing turbine-generator sets
- Overhaul replacement spare parts for Francis, Kaplan, bulb and pumped-storage reversible units
- Medium-large hydropower plants, EPC contractors and power-asset operators worldwide
Our Services
- Custom design & fabrication according to customer drawings or technical specifications
- Mechanism scheme optimization for high-head and large-flow hydropower scenarios
- Complete factory tests: air-tightness test, opening-closing performance test
- Technical support for on-site installation, commissioning and routine maintenance guidance
Next Steps: Please provide diameter, trigger vacuum parameter or drawings, and we will prepare targeted technical proposal and quotation for you.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Chongqing Huanxiang Industrial. Co., Ltd.
Location
Floor 3,No.228,Liang Gang Avenue of Hui Xing Street,Yubei District,Chongqing of China 401120
Contact Person
Tom Hu