| Customization: | Available |
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| Media: | Water |
| Temperature: | Ordinary Temperature |
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Product Overview
Introducing the H76 Wafer-Type Dual Disc Check Valve, an ingeniously engineered automatic valve crafted to effectively prevent medium backflow. With its wafer-style connection, this valve is a versatile choice for an array of pipeline systems, serving industries such as petroleum, chemical, power, and water supply. The robust valve body is available in stainless steel (like 304, 316) or durable carbon steel (WCB), ensuring excellent corrosion resistance, high-pressure tolerance, and swift opening/closing performance, making it a reliable asset in water supply and drainage applications.
Structure and Working Principle
- Dual Disc Design: Engineered with two symmetrical discs pre-tensioned by springs, this design ensures rapid closure to minimize the water hammer impact, safeguarding your systems with precision.
- Wafer-Style Installation: The flangeless design of the valve body, clamped between pipeline flanges using bolts, offers a space-saving solution ideal for compact piping layouts and efficient system integration.
- Operation: During forward flow, the fluid pressure gracefully opens the discs; when flow ceases or reverses, the discs close instantly under the spring force and reverse pressure, effectively blocking any backflow.
Key Features
- Low Water Hammer Effect: The innovative split-disc design significantly reduces closing impact, protecting the integrity of your pipeline with utmost reliability.
- Lightweight Advantage: Being 30%~50% lighter than conventional check valves, it ensures seamless installation and maintenance, easing operational demands.
- Reliable Sealing: With seal faces made from rubber, PTFE, or robust metal-to-metal hard sealing, this valve is compatible with a wide range of media, including water, steam, and oils.
- Versatility: Stainless steel is suited for corrosive environments such as seawater and acids, while carbon steel provides cost efficiency for standard conditions, offering adaptable solutions.
Applications
- Essential for municipal water supply and drainage systems
- Perfect for petrochemical pipelines
- Ideal for thermal power plant cooling water circulation
- Vital for HVAC systems
- Indispensable on marine and offshore platforms
Selection and Installation Guidelines
- Selection Criteria: Make informed choices on material and seal type, based on medium characteristics (corrosivity, temperature), pressure, and pipe size, ensuring optimal valve performance.
- Installation Direction: Ensure proper alignment of the valve arrow with flow direction; suitable for both horizontal and vertical mounting for versatile integration.
- Maintenance: Regular inspection of disc springs and seal surfaces is recommended. Prevent debris accumulation to maintain peak efficiency.
The H76 Wafer-Type Dual Disc Check Valve is distinguished by its compact design, rapid response, and minimal maintenance needs, making it an ideal choice for backflow prevention in space-constrained or high-frequency systems. Achieving optimal performance requires matching materials and sealing solutions to the specific operating conditions for enhanced durability and reliability.
| 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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