The manual resilient seated butterfly valve is a practical and cost-effective fluid control device,widely used in industrial,municipal,and commercial pipeline systems where automatic control is not required.As a classic variant of the resilient seated butterfly valve,it is distinguished by its manual operation mechanism,featuring simple structure,easy operation,and reliable performance,making it an ideal choice for small to medium-sized pipelines and scenarios with low control frequency.

The core structure of this valve includes a sturdy valve body,a concentric rotating disc,a central stem,a high-performance resilient sealing seat,and a manual operating mechanism(usually a handwheel or lever).The valve body is commonly made of cast iron,cast steel,or stainless steel,ensuring good structural rigidity,corrosion resistance,and durability to adapt to different medium conditions.The resilient seat,crafted from premium elastomers such as EPDM,NBR,or Viton,offers excellent elasticity,wear resistance,and aging resistance,achieving bubble-tight shut-off when the valve is closed and effectively preventing medium leakage.

The manual operation mechanism is the key feature of this valve.Equipped with a ergonomic handwheel or lever,it allows operators to control the valve with minimal effort—rotating the handwheel 90 degrees(or operating the lever)can quickly open or close the valve,with clear opening and closing positions for easy operation and observation.The manual design eliminates the need for power supply,air source,or complex control systems,reducing installation and maintenance costs,and ensuring stable operation even in power-outage scenarios.

This valve is compatible with both wafer and flanged connection modes,suitable for pipelines with nominal diameters from DN50 to DN1200,and works stably under low to medium pressure conditions(usually PN10-PN16).Installation is straightforward,and daily maintenance is simple:regular inspection of the sealing performance,lubrication of the stem and handwheel,and replacement of the resilient seat when worn can significantly extend the valve’s service life.It is widely applied in municipal water supply and drainage,sewage treatment,HVAC systems,fire protection pipelines,food processing,and light chemical industries,suitable for controlling clean water,recycled water,mild corrosive liquids,and low-pressure gases.

In summary,the manual resilient seated butterfly valve integrates simple operation,reliable sealing,cost-effectiveness,and easy maintenance.It is a practical fluid control solution for scenarios where automatic control is unnecessary,providing stable and efficient support for the safe operation of various pipeline systems.