China Extension Stem Butterfly Valve Supplier
- Water, Oil, Gas And Various Corrosive Media
- Reduce the flow resistance coefficient
- 50 Years
- Valve Plate as Stainless Steel；ductile Iron
Product Description
What is a Extension Stem Butterfly Valve?
A Extension Stem Butterfly Valve is a type of rotary valve used to regulate flow through pipes. It consists of a circular disk (or “butterfly”) that pivots on its center axis to open or close the flow path inside the valve body.
Materials of Extension Stem Butterfly Valve
- Body: Typically constructed from ductile iron, cast steel or aluminum to withstand pressurized systems and corrosion.
- Disk: Available in aluminum bronze, ductile or nodular irons as they are corrosion resistant and provide tight shut-off.
- Seat: The sealing surface is made from resilient materials like EPDM, NBR or FFKM rubber optimized for temperature, chemical compatibility and long life.
The Unique Attributes of Extension Stem Butterfly Valve
- Valve Body: Fashioned from robust ductile iron, the core Extension Stem Butterfly Valve body embodies strength and durability, capable of withstanding impacts without fracturing.
- Gate: Constructed with ductile iron, the gate acts as the dynamic component that slides to regulate flow, ensuring longevity and reliability in operation.
- Seating: Featuring an elastomeric sealing surface, the seat guarantees a tight seal when the gate closes against it under varying static or dynamic pressures.
- Bonnet: Secured atop the valve, the bonnet, firmly bolted, encloses the operating stem components, safeguarding them from the process fluid’s effects.
- Stem: Serving to transmit manual or actuator forces for gate movement, the stem threads into nuts that facilitate gate operation through rotation.
- Flanges: With ANSI/ASME standard flanges at both ends, easy bolted installation between pipe flanges is enabled, ensuring seamless integration.
- Coatings: Ductile iron valves from China Extension Stem Butterfly Valve Supplier are often coated externally and internally to shield against corrosion, ensuring prolonged operational reliability.
Applications of Extension Stem Butterfly Valve
- Water Supply – Ensures clean water is not contaminated by backflows from industrial plants, irrigation systems or buildings.
- Swimming Pools – Extension Stem Butterfly Valve protects treated pool water and prevents drainage back-siphoning saltwater into fresh supplies.
- Process & Power Plants – Prevents reverse circulation in steam lines, cooling systems, pumps and critical fluid transfer processes.
- Medical & Laboratory – Backflow prevention safeguards sterilization systems and protects bio-samples in laboratories from contamination.
- Fire Protection – Extension Stem Butterfly Valve checks flow direction in sprinkler systems to guarantee adequate pressure is maintained at each sprinkler head.
- Marine – Keeps ballast systems secure against reversing water currents or accidental suction intakes when loading cargo holds.
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Why Choose Us
Founded in 1956 and situated in Tianjin Binhai New Area, the hub of China’s valve production, TWT stands out with its modern design standards, cutting-edge intelligent manufacturing equipment, and a sophisticated testing center. We are an industry leader focusing on the development and manufacturing of valves. Our extensive product lineup includes butterfly valves, eccentric semi-ball valves, regulating valves, diamond regulating valves, exhaust valves, hydraulic control valves, and over 1000 other types of valves.
