IPDB › China Industry › Industrial Equipment & Components
China, Chinese High Performance N745 Dual-Chamber Multi-Function Pump Control Valve1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
ValveCheck ValveDual-Chamber Multi-Function Pump Control ValveReliable N745 Multi-Function Valve
Hengkong Building Technology (Shanghai) Co., Ltd.
Preview:
Product Description Product DescriptionDual-chamber multi-function pump control valveThe dual-chamber multi-function pump control valve is specifically designed to protect pumps and pipeline systems. Installed at the pump outlet, it effectively prevents and eliminates water hammer damage caused by pump start-stop cycles or sudden power failures. Its unique dual-chamber structure and staged closing mechanism ensure rapid response while avoiding pressure surges, while also achieving a full-open state with low flow resistance. It serves as a core component for the safe operation of pumping stations. Key FeaturesDual Water Hammer ProtectionMain Disc Rapid Closure: In the event of a power failure, the main disc closes instantly (response time <1 second) under gravity, spring force, and water hammer force, blocking reverse flow.Auxiliary Disc Slow Closure: Delayed closing (adjustable) gradually releases back-end high pressure, preventing water hammer waves from impacting the pump.Intelligent Slow-Opening ControlDuring pump startup, the valve's opening speed is regulated via a needle valve (customizable: 0.5-10 seconds), ensuring smooth pressure buildup in the pipeline and preventing startup water hammer.High-Efficiency Flow DesignExtremely low flow resistance in the fully open state, with pressure loss <0.2 bar (@2m/s flow velocity), reducing energy consumption.Dual-chamber balanced structure minimizes medium turbulence, extending seal life.Wide CompatibilitySize Range: DN40-DN1200, covering small water supply systems to large industrial pipelines.Pressure Ratings: PN10/16/25/40 or ANSI Class 150/300, suitable for high-pressure conditions.Material & Seal OptionsValve Body Materials: QT500-7 (ductile iron), SUS304/316 (stainless steel), SAF2205 (duplex steel), bronze, offering strong corrosion resistance.Seal Materials: NBR (oil-resistant), EPDM (high-temperature resistant), HNBR (chemical-resistant), compatible with clean water, seawater, and mildly corrosive liquids.Easy MaintenanceRemovable valve cover design allows seal or disc replacement without pipeline disassembly. Technical SpecificationsParameterDetailsSize RangeDN40-DN1200Pressure RatingsPN10/16/25/40 or ANSI Class 150/300Closing SpeedMain disc ≤1 sec; Auxiliary disc adjustable (2-15 sec)Full-Open Pressure Loss≤0.2 bar (@2m/s flow velocity)Valve Body MaterialsQT500-7, SUS304, SUS316, SAF2205, bronzeSeal MaterialsNBR, EPDM, HNBRConnection TypeFlanged (Standards: EN 1092-2, ANSI, JIS)Applicable MediaClean water, seawater, industrial circulating water, oils, and other non-strongly corrosive media Detailed Photos Working Principle DiagramPump Startup Phase:Inlet pressure gradually pushes the main disc open, with needle valve regulating opening speed to prevent sudden pressure spikes.Normal Operation Phase:Valve fully opens, with dual-chamber design ensuring low flow resistance.Pump Stop/Power Failure Phase:Main disc closes instantly to block reverse flow; auxiliary disc closes slowly to release residual pressure, eliminating water hammer waves. ApplicationsMunicipal Water Pumping Stations: Protects pumps and pipelines from start-stop water hammer damage.Industrial Cooling Systems: Prevents pipe bursts caused by pump failures in high-pressure circulating water systems.Fire Pump Rooms: Ensures pipeline safety during emergency shutdowns.Seawater Desalination Projects: Corrosion-resistant materials suit high-salinity media. Selection & Installation GuideSelection TipsChoose materials based on media corrosivity (SAF2205 or bronze recommended for seawater).Stainless steel valve bodies are advised for high-pressure conditions (PN25+).Installation NotesMust be installed horizontally to ensure proper gravity-assisted disc closure.A basket filter is recommended at the pump outlet to prevent debris from jamming the disc.Needle valve adjustment should align with system pressure tests; slow-closing time is typically set at 2-3 times the pressure wave transmission time. The N745 valve combines precise mechanical design and material optimization to integrate water hammer protection with high-efficiency flow, significantly enhancing pumping station reliability and energy efficiency. Company ProfilePackaging & ShippingFAQ1. What is your term of payment?A: 30% advance payment, 70% to be paid before delivery after goods are ready.2. How about your delivery time?A: Delivery Lead Time: Standard shipment within 30 days. Exact delivery date will be confirmed based on order quantity and specific requirements.3. Can you produce products with my own brand?A: Yes, we can offer OEM services.
Purchasing Request
Note: Send your purchase request, and we will screen suppliers or manufacturers for you free of charge...