Wafer Type Resilient Seated Butterfly Valve

The wafer type resilient seated butterfly valve is a compact,cost-effective fluid control component widely used in industrial and municipal pipeline systems.As a variant of the resilient seated butterfly valve,it is distinguished by its wafer-style design—installed between two pipeline flanges without the need for separate flange connections,making it lightweight,space-saving,and easy to assemble,which has become its core competitive advantage in various pipeline applications.

The key structure of this valve includes a thin-walled valve body,a concentric rotating disc,a central stem,and a high-performance resilient sealing seat.The valve body is usually made of cast iron,cast steel,or stainless steel,ensuring structural strength and corrosion resistance to adapt to different medium conditions.The resilient seat,made of EPDM,NBR,or Viton elastomers,features excellent elasticity,wear resistance,and aging resistance,enabling bubble-tight sealing when the valve is closed.When the disc rotates 90 degrees,it quickly opens or closes the flow channel,with small operating torque,allowing for manual,electric,or pneumatic operation to meet diverse control needs.

Compared with other valve types,the wafer type design significantly reduces the overall size and weight of the valve,saving installation space and reducing transportation and installation costs.It is compatible with standard flanges of various specifications,suitable for pipelines with nominal diameters ranging from DN50 to DN1200,and works stably under low to medium pressure conditions(usually PN10-PN16).The smooth internal flow channel minimizes fluid resistance and pressure loss,ensuring efficient medium transmission without affecting the overall pipeline efficiency.

During installation,attention should be paid to aligning the valve with the pipeline flanges to avoid uneven stress on the valve body,which may damage the sealing seat.Regular maintenance is simple:only need to check the sealing performance and lubricate the stem regularly to extend the service life.This valve is widely used in municipal water supply and drainage,sewage treatment,HVAC systems,fire protection pipelines,food and beverage,and light chemical industries,suitable for controlling clean water,recycled water,mild corrosive liquids,and low-pressure gases.

In conclusion,the wafer type resilient seated butterfly valve integrates compact structure,reliable sealing,easy installation,and economic efficiency.It is an ideal fluid control solution for scenarios where space is limited and cost is a concern,playing an irreplaceable role in promoting the safe and efficient operation of modern pipeline systems.