Product Overview
The Butterfly Type Slow-Closing Check Valve is designed to prevent reverse flow and effectively reduce water hammer in large-diameter pipelines.
Using a butterfly-disc structure combined with a damping/slow-closing mechanism, the valve closes gently after pump shutdown, eliminating hydraulic shock and protecting pipeline equipment.
It is widely used in municipal water supply, pump stations, irrigation networks, industrial circulation systems, and sewage pipelines.
Product Advantages
● Excellent Water Hammer Control: Slow-closing mechanism prevents pressure surges and pipeline vibration.
● Large Flow Capacity: Suitable for DN40–1400 long-distance or high-flow pipelines.
● Stable & Quiet Operation: Eliminates slamming noise during valve closing.
● Long Service Life: Durable disc, shaft, and seat design reduce wear.
● Pump Protection: Prevents reverse flow that can damage pumps or cause water hammer issues.
Size Range
● DN40 – DN1400
Pressure Rating
● PN10 / PN16
Standards
● Design Standard: EN 1074 / EN 12032
● Test Standard: EN 12266
● Flange Standard: EN 1092-2
Industry Applications
● Municipal water supply and distribution pipelines
● Booster pump stations and water plants
● Long-distance water transmission lines
● Irrigation and agricultural pipeline systems
● Industrial circulation and cooling loops
● Sewage & wastewater pipelines
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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