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| Media: | Water |
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Product Overview
Discover the innovative H71 Wafer Check Valve, engineered for excellence with its sleek, compact wafer connection design. This advanced valve boasts a structural length of only 1/4 to 1/8 compared to traditional flange check valves, drastically reducing both size and weight to as little as 1/4 to 1/20 of their conventional counterparts. Key benefits include swift closure to effectively minimize the risk of water hammer, low fluid resistance, and versatile installation on both horizontal and vertical pipelines. Compared to the traditional H41 flange check valves, the H71 type elegantly resolves issues such as bulkiness and the difficulties associated with installation and maintenance of older models.
Structural Features
- Fast Closure: Designed with a spring-loaded disc that ensures rapid, short-stroke closure, significantly reducing water hammer pressure even in high-flow conditions.
- Sealing Performance: The single-disc design, combined with spring-assisted sealing, guarantees zero leakage and an impressively extended service life.
- Material Versatility: With components such as the body and disc available in carbon steel, stainless steel (304/316/316L), duplex steel, and more, this valve adapts seamlessly to diverse media requirements.
Application Range
- Media Compatibility: Perform confidently with water, steam, oil, nitric acid, acetic acid, strongly oxidative media, and urea. The careful selection of materials ensures compatibility, even in corrosive environments.
- Operating Parameters:
- Pressure Rating: Ranging from PN10 to PN420 (Class150 to Class2500) to meet diverse industrial requirements.
- Size Range: Accommodates a wide diameter spectrum, from DN15 to DN600.
- Temperature Range: Resilient across an impressive range of -196°C to 540°C, ensuring performance in extreme conditions.
- Industry Applications: Extensively deployed across sectors such as petrochemical, power generation, metallurgy, food processing, environmental protection, and municipal pipeline systems.
Technical Standards
- Design & Manufacturing: Expertly crafted to meet standards like JB/T 8937 and API 594, ensuring reliability and excellence.
- Flange Connections: Capably supports GB/T 9113, ASME B16.5, and other recognized international standards for secure fitting.
- Testing & Certification: Adheres to API 598 and GB/T 13927 test protocols. Select manufacturers proudly hold ISO 9001, API 6D, and more, confirming their commitment to quality.
Installation & Maintenance
- Flow Direction: Ensure medium flow aligns with body arrow markings; designed for both horizontal and vertical mounting flexibility.
- Support Requirements: Larger valves may require independent supports to maintain pipeline integrity and ensure optimal sealing performance.
Performance Parameters
- Flow Resistance Coefficient: Enjoy decreasing resistance with increasing diameter, exemplified by DN50 at 2.6 and DN1200 at an impressive 0.7.
- Flow Capacity: Witness high throughput efficiency as demonstrated by a DN100 valve with a Kv=289 m³/h (or Cv=338 per US standards).
Material Configuration
- Standard Options:
- Body: Offered in WCB and superior 304/316 stainless steel for robust performance.
- Disc & Spring: Available in durable stainless steel or alloy steel for resilience and longevity.
- Sealing Surface: Choose between rubber or a hard-faced alloy overlay for optimal sealing effectiveness.
The H71 Wafer Check Valve stands as a paragon of efficiency, reliability, and adaptability for various industrial pipeline systems. For optimal performance, consider media properties, pressure and temperature conditions, and the installation environment. Consult manufacturer datasheets or technical services for specifications tailored to your project needs.
| 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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