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| Media: | Water |
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Product Overview
Presenting the H76 Wafer-Type Dual Disc Check Valve: an innovative, automatic valve specifically engineered to prevent medium backflow in diverse pipeline systems. Its wafer-style connection makes it a versatile choice for applications across petroleum, chemical, power, water supply, and drainage sectors. Constructed from high-grade stainless steel (304, 316) or durable carbon steel (WCB), this valve ensures exceptional corrosion resistance, manages high-pressure environments with ease, and offers swift opening and closing performance.
Structure and Working Principle
- Dual Disc Design: Two expertly crafted symmetrical discs are pre-tensioned by high-quality springs, facilitating rapid closure and significantly reducing water hammer impact.
- Wafer-Style Installation: The flangeless valve body, designed to be clamped between pipeline flanges with bolts, conserves space and is ideal for compact piping layouts.
- Operation: In forward flow, fluid pressure effortlessly opens the discs; during flow cessation or reversal, they immediately close under spring force and reverse pressure, effectively blocking backflow.
Key Features
- Low Water Hammer Effect: The advanced split-disc design minimizes closing impact, safeguarding pipeline integrity.
- Lightweight: This valve is 30% to 50% lighter compared to conventional check valves, ensuring convenient installation and easy maintenance.
- Reliable Sealing: With seal faces available in rubber, PTFE, or hard metal-to-metal sealing, it is compatible with various media such as water, steam, and oils.
- Versatility: Choose stainless steel for environments with corrosive substances like seawater and acids, while carbon steel offers an economical choice for standard conditions.
Applications
- Perfect for municipal water supply and drainage systems
- Ideal for use in petrochemical pipelines
- Suited for thermal power plant cooling water circulation
- Compatible with HVAC systems
- Essential for marine and offshore platforms
Selection and Installation Guidelines
- Selection Criteria: Carefully choose the material and seal type based on medium properties (such as corrosivity and temperature), pressure, and pipe size.
- Installation Direction: Ensure the valve arrow aligns with the flow direction; compatible with both horizontal and vertical mounting.
- Maintenance: Conduct regular inspections of disc springs and seal surfaces and prevent debris accumulation for optimal performance.
The H76 Wafer-Type Dual Disc Check Valve is distinguished by its compact design, rapid response, and minimal maintenance, making it an excellent choice for backflow prevention in space-constrained or high-frequency systems. Achieving optimal performance requires matching the materials and sealing solutions to the 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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