For sale Sirca manual valve model S301E-w Dn150 A Sirca type S301E-w manually closing butterfly valve is a device used to regulate the flow of fluids (such as water, gas, oil) in a piping system. Below is a description of its main features: ### **How ​​it is made** - **Valve body**: Generally made of cast iron, stainless steel, or other corrosion-resistant materials. - **Disc**: A central disc that rotates to regulate the flow. It can be made of stainless steel or other resistant materials. - **Manual actuator**: A lever or handle to manually operate the valve. - **Seals**: Made of materials such as EPDM, NBR, or PTFE, to ensure sealing and prevent leaks. ### **What is it for** It is used to control the flow of fluids in a system, allowing the passage of the fluid to be opened, closed, or partially regulated. ### **Constituent elements** 1. Valve body. 2. Closing disc. 3. Rotation shaft. 4. Seals. 5. Lever or handle for manual closing. ### **Types of butterfly valves** - **With manual closing**: Operated by a lever or handwheel. - **With pneumatic or electric actuator**: Automated for remote control. - **With wafer or lug flange**: Different mounting types for insertion between pipes. ### **Materials** Used to control fluids such as water, gas, oil, and even chemically aggressive fluids, depending on the construction material. ### **Why buy it in stock** - **Economic convenience**: Buying in stock reduces the unit cost. - **Immediate availability**: Having a ready stock in the warehouse guarantees speed of intervention. - **Prevention of interruptions**: Minimizes the risk of system downtime due to maintenance or repairs.