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| THE HIGH PERFORMANCE DESIGN |
| The axis of disc rotation is double eccentric to the seat ring.
When the disc rotates, it unseat at a small turning angle by its cam effect.
This prevents seat abrasion and provides perfect seal for a long period. |
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| APPLICATION OF PIPING SYSTEM |
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Marine tankers-shipbuilding |
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Foundry |
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Offshore plants |
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Pulp and paper plants |
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Chemical and petro-chemical plants |
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Food plants |
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Water treatment-purification |
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Textile industry |
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Steel and metal plants |
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Sugar refining |
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Military application |
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Fire safe piping system |
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| CLASSIFICATION BY CONNECTION TYPE |
| Appearance |
Type |
General Characteristics |
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AV-H, M & F Series (WAFER) |
| • |
The 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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Less quantity of bolt and easy installation. |
| • |
Inconvenient maintenance of adjacent pipe. |
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AV-H, M & F Series(SEMI-LUG) |
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Similar as wafer type except a pair of the thread bolt in way of the upper and lower sides for easy maintenance of adjacent pipe. |
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Easy handling and light weight. |
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Less quantity of bolt and easy installation. |
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Keep liquid remained during repairing adjacent pipe. |
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AV-H, M & F Series (LUG) |
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Ring shape bolt hole for bolting with flange. |
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Keep pressure inside during repairing adjacent one side pipe. |
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Different flange shape. |
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Possible damage on full face gasket. |
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Hard repairing corroded bolt. |
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More man-hour for installation. |
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Heavy weight and more cost. |
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AV-H, M & F Series (FLANGE) |
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Both end 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 and more cost. |
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More man-hour for installation. |
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