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Piston Type Non Return Valve Single Plate Lift Disc Check Valve

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  • H71

  • NIPO

Precision Forging for Superior Strength: The one-piece/integral forged valve body features intact grain flow and mechanical properties far exceeding cast components, eliminating hidden risks of internal defects.



A Reliable Guardian for High-Pressure Applications: Engineered specifically for high-pressure, high-fluctuation operating conditions of Class 600 and above, it delivers substantially enhanced pressure-bearing capacity and safety margin.



Steady Performance Across Extreme Temperature Ranges: Maintains consistent performance from -196°C cryogenic temperatures to +540°C high temperatures, expanding its applicability to extreme fields such as LNG and chemical engineering.



A Cost-Effective Choice Throughout the Entire Lifecycle: Exceptional reliability translates to ultra-low maintenance costs and downtime risks, resulting in a lower total cost of ownership over long-term use.


Comparison DimensionForged Lift Check ValveCast Lift Check Valve
Core Material FeatureHigh strength and toughnessGood formability
Internal StructureDense and uniform; continuous grain flow; no shrinkage cavities or sand holesPotential casting defects 
Mechanical StrengthExtremely high; excellent tensile, compressive and fatigue resistanceMeets standard pressure class requirements
Impact ToughnessExcellent; resistant to cracking in low-temperature or impact conditionsRelatively low; higher risk of brittleness
Pressure ResistanceHigher and safer; suitable for higher pressure classes (e.g., Class 900+)Suitable for nominal pressure ranges (e.g., Class 150-600)
Long-Term ReliabilityExcellent; Good
EconomyHigher initial procurement cost; lower total lifecycle cost (maintenance-free)More advantageous initial procurement cost


Is a professional valve manufacturer integrating design, technical development, produce and sale service, has a solid strength and rich production experience.

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Phone: +86-17357708953 
            nipo@nipovalve.com
WhatsApp: +8617357708953 
Add: Zhongxing Road 43#, Tangtou Industrial Zone, Ou-bei town, Wenzhou, Zhejiang, China.
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