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Product Overview
Discover the cutting-edge H76 Wafer-Type Dual Disc Check Valve, your ultimate solution for automatic backflow prevention. With its sleek wafer-style connection, this valve is a trusted ally in the seamless operation of pipeline systems across industries such as petroleum, chemical, power, water supply, and drainage. Crafted from robust stainless steel (304, 316) or carbon steel (WCB), it ensures superior corrosion resistance, high-pressure endurance, and swift, responsive opening and closing performance.
Structure and Working Principle
- Dual Disc Design: Embrace efficiency with two precisely balanced symmetrical discs, enhanced by pre-tensioned springs for rapid closure - effectively minimizing the impact of water hammer.
- Wafer-Style Installation: Optimize your pipeline space with a flangeless valve body, expertly clamped between pipeline flanges via bolts, making it perfect for compact piping systems.
- Operation: Experience seamless operation as fluid pressure elegantly opens the discs during forward flow. Upon flow cessation or reversal, the discs promptly close under spring force and reverse pressure, ensuring impeccable backflow blockage.
Key Features
- Low Water Hammer Effect: The innovative split-disc design mitigates closing impact, safeguarding the integrity of your pipeline system.
- Lightweight: Revolutionize your installation process with a valve that's 30%~50% lighter than traditional check valves, facilitating easy installation and maintenance.
- Reliable Sealing: Choose from rubber, PTFE, or metal-to-metal hard sealing, offering compatibility with a wide range of media, including water, steam, and oils, ensuring reliable sealing.
- Versatility: Maximize versatility with stainless steel, perfect for corrosive environments like seawater and acids, while carbon steel provides a cost-effective solution for standard conditions.
Applications
- Essential for municipal water supply and drainage systems
- Perfect for petrochemical pipelines
- Ideal for thermal power plant cooling water circulation
- Integral to HVAC systems
- Optimized for marine and offshore platforms
Selection and Installation Guidelines
- Selection Criteria: Precisely choose material and seal type according to medium corrosivity, temperature, pressure, and pipe size for optimal performance.
- Installation Direction: Ensure flawless alignment by matching the valve arrow with the flow direction, suitable for both horizontal and vertical mounting.
- Maintenance: Maintain peak performance by regularly inspecting disc springs and seal surfaces, and prevent debris accumulation for longevity.
The H76 Wafer-Type Dual Disc Check Valve excels in compact design, rapid responsiveness, and minimal maintenance, making it indispensable for backflow prevention in space-constrained or high-frequency systems. Achieve optimal performance by meticulously matching materials and sealing solutions to your specific operating conditions.
| Pressure Rating | PN10~PN40 (or Class 150~300) |
| Nominal Diameter | DN50~DN600 (2"~24") |
| Temperature Range: | Stainless Steel: -29ºC~200ºC (rubber seal) / 425ºC (metal seal) |
| Carbon Steel: -29ºC~425ºC | |
| Connection Standards | GB, ANSI, DIN, JIS wafer flange dimensions. |
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