Flanged Butterfly Valve Double Eccentric
Butterfly valves regulate flow by quarter-turning a disc. They are used in pipelines for non-corrosive fluid media. These valves are also applicable in engineering systems for generators, natural gas, liquefied petroleum gas, urban gases, and hot and cold air. Because they are so small and light, they’re popular in industrial applications.
The basic components of a butterfly valve are the disc, valve rod, and sealing ring. A butterfly valve’s body is cylindrical, with a short axial length. The butterfly plate is attached to the body, which is attached to an actuator. When you move the actuator, the stem moves, thereby rotating the disc inside. This is how the flow is regulated.
A butterfly valve is used to regulate the flow of fluid in a pipeline. It has a disk and seat that rotate. The disc can be positioned perpendicular to the flow cross-section area, which completely blocks flow out of the valve. As the disc rotates 90 degrees, the valve fully opens and allows fluid to flow through the space between the disc and seat. If the disc rotates less than this degree, the flow is slowed down.
Standard: API609/EN593/MSS SP-67/ ISO5752 /BS5155/AWWA C504 Flange drilling is according to DIN 2501, BS4504, ANSI B16.1
Working pressure: 10bar/16bar/25bar
Testing pressure:
Shell: 15bar/24bar/37.5bar
Seal: 11bar/17.6bar/27.5bar
Type: Double Flange Eccentric, Double Flange Concentric
Material:
Body: DI/CI /Carbon Steel/Stainless Steel/Bronze
Disc: DI/Stainless steel 304/316,AL-Bronze
Shaft: Stainless steel410/416/420
Seat :EPDM/NBR/FPM/PTFE
Coating: Internal and external with fusion bonded epoxy coating min250μm
Features of Butterfly Valve Double Eccentric
. Easy actuator automation
. Low operating torques
. High reliability
. Excellent sealing properties
. Suitable for vacuum conditions
. Easy installation
. strong and corrosion resistant
Application of Butterfly Valve Double Eccentric
Butterfly Valve Double Eccentrics are most commonly used in underground water supply applications as an alternative to gate valves. When installing butterfly valves underground, lower burial depths are required, and they are generally more cost-effective than gate valves, especially at larger sizes. They can of course also be used on the ground.
