| Customization: | Available |
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| Media: | Water |
| Temperature: | Ordinary Temperature |
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Product Overview
The H71 Wafer Check Valve is meticulously designed with a compact wafer connection, significantly reducing its structural length to just 1/4 to 1/8 of traditional flange check valves. This innovative design boasts up to a 95% reduction in weight, showcasing efficiency in size and installation. Key benefits include its rapid closure mechanism, expertly mitigating water hammer effects, while its low fluid resistance and versatility cater to both horizontal and vertical pipelines. In comparison to the bulkier H41 flange check valves, the H71 variant addresses longstanding issues of cumbersome installation and challenging maintenance, revolutionizing modern pipeline solutions.
Structural Features
- Fast Closure: The spring-loaded disc ensures swift, short-stroke closure, significantly curtailing water hammer pressure even in high-flow conditions.
- Sealing Performance: Engineered for precision, the single-disc vertical movement with spring-assisted sealing guarantees zero leakage, ensuring a prolonged and reliable service life.
- Material Versatility: Tailored to meet diverse media requirements, components like the body and disc are available in carbon steel, stainless steel (304/316/316L), and duplex steel, among others.
Application Range
- Media Compatibility: This valve is adept at handling water, steam, oil, nitric and acetic acids, strongly oxidative media, and urea. Its material selection bolsters performance in corrosive environments.
- Operating Parameters:
- Pressure Rating: Flexible operation within PN10-PN420 (Class150-Class2500) ranges.
- Size Range: Available in sizes from DN15 to DN600, accommodating a wide array of applications.
- Temperature Range: Operates efficiently in extreme conditions, from -196°C to 540°C.
- Industry Applications: Extensively utilized across petrochemical, power generation, metallurgy, food processing, environmental protection, and municipal pipeline systems, this valve is a versatile solution for numerous sectors.
Technical Standards
- Design & Manufacturing: Adheres to rigorous standards such as JB/T 8937 and API 594, ensuring top-tier quality and consistency.
- Flange Connections: Aligns with international standards including GB/T 9113 and ASME B16.5, facilitating global integration.
- Testing & Certification: Complies with API 598 and GB/T 13927 test protocols. Select manufacturers are ISO 9001 certified and meet API 6D standards, assuring quality and reliability.
Installation & Maintenance
- Flow Direction: Ensure proper alignment with body arrow markings; engineered for seamless horizontal and vertical mounting.
- Support Requirements: Larger valves may necessitate independent supports to safeguard against pipeline stress, thereby maintaining sealing integrity.
Performance Parameters
- Flow Resistance Coefficient: Optimized to decrease with increasing diameter, exemplified by DN50: 2.6; DN1200: 0.7, ensuring streamlined operations.
- Flow Capacity: The DN100 valve boasts a high throughput efficiency with Kv=289 m³/h (Cv=338 per US standards), highlighting its robust performance.
Material Configuration
- Standard Options:
- Body: Crafted from WCB, 304/316 stainless steel for durability and strength.
- Disc & Spring: Available in high-quality stainless steel/alloy steel, ensuring longevity and resilience.
- Sealing Surface: Features either a rubber or hard-faced alloy overlay, tailored for exemplary sealing performance.
The H71 Wafer Check Valve stands as a paragon of efficiency, reliability, and adaptability for industrial pipeline systems. For optimal results, consider media properties, pressure/temperature conditions, and installation environment. For project-specific needs, consult manufacturer datasheets or technical services to ensure precision and alignment with your operational goals.
| 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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