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Top Mounted Two-way Sealing Eccentric Hemispherical Valve
Product overview
Top mounted Two-way sealing eccentric hemispherical valve adopts the eccentric clamping principle and achieves the purpose of locking, adjusting and closing through the transmission mechanism. The sealing pair is the metal surface ring with hard surface contact seal. When the double eccentric structure is opened, the valve core is located in the ball chamber, and the flow cross-section is large, and the valve core is not scoured when the valve is closed. When the valve core is opened, the spherical surface of the valve core gradually moves along the valve seat and can be cut off effectively The scale is obstructed and reliable sealing is realized. It is especially effective for the mixed flow transportation of two-phase mixed flow which is easy to scale solid precipitation.
Product Features
1. Sealed tightly, the transmission of harmful gas can reach zero leakage.
2. It is especially effective for the mixed flow transportation of two-phase mixed flow which is easy to scale solid precipitation.
3. After adjustment or replacement, the valve seat can still be used to avoid the defect of scrapping the whole set after the valve seal fails.
4. The hemisphere and valve seat are overlaid with special treatment, corrosion resistance, wear resistance, high strength and other types to meet the needs of different occasions.
5. The valve core of the sealing pair has a compensation amount. When the valve is worn, it will rotate a little when it is closed, so it can seal reliably and prolong the service life.
6. When the valve core is closed, the valve core will not be scoured. When the valve core is opened, the spherical surface of the valve core will gradually move along the valve seat, which can effectively remove the scaling obstacles and realize reliable sealing.
Execution Standard
Design spec：GB/T 12237-2007
Face to Face：GB/T 12221-2005
Flange end：GB/T 9113-2000
Test & check：GB/T 13927-2008
Performance Parameter
Nominal diameter：DN50~2000mm
Nominal Pressure：PN1.0
Applicable media： Natural gas, steam, oil, acid, alkali, pulverized coal, fly ash, slag, mud, containing granular, fiber and other kinds of medium
Applicable temperature：-50≤600℃
Main materials：WCB、ZG08Cr18Ni9
