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| THE ECCENTRIC DESIGN |
| CENTER OF SHAFT' in the 'Center of valve Seat' |
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Applicable for butterfly valve with interchangeable soft seat. |
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Circular unbroken seats on disc and in body. |
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Simple maintenance. |
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Change of seat ring by dismantling of the retaining ring only. |
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Wide variety of seat materials available. |
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Flow characteristics and pressure-drop less favorable than 'concentric design' |
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Operating torque is higher than concentric design but substantially lower than double
eccentric design |
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The valve seat will be remained contacted from fully closed to fully opened position. |
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Suitable for installation in Medium Range Pressure System (<30kg/ ? ) |
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No limitation on corrosiveness of medium when proper seat material chosen. |
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Not suitable for FIRE SAFE require ment are applied. |
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| CLASSIFICATION BY CONNECTION TYPE |
| Appearance |
Type |
General Characteristics |
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AV-E Series AV-EWR (WAFER) |
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General Applications-Shipbuilding water works, heating and
ventilation, power plants, Chemical plant etc. |
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Valve to be installed with long bolts between the flanges at
adjacent pipe without flange on the valve. |
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Easy handling and light weight. |
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Easy installation, less bolt quantity and low cost. |
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Inconvenient maintenance of adjacent pipe. |
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AV-E Series AV-EFR(FRANGED) |
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General Applications - general piping works, power plants large diameter piping. |
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Both ends with complete flange. |
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Suitable to general pipe flange. |
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Suitable for shipside valve in the ship. |
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Heavy weight. |
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Same installation as ordinary valve. |
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