• Ring shape bolt hole for bolting with flange.
• Keep pressure inside during repairing adjacent one side pipe.
• Different flange shape.
• Possible damage on full face gasket.
• Hard repairing corroded bolt.
• More man-hour for installation.
• Heavy weight and more cost.

The axis of disc rotation is double eccentric offset to the seat ring.
When the disc rotates, it unseats at a small turning angle by this cam effect.
This prevents seat abrasion and provides perfect seal for a long period.

Application of piping system:

• Marine tankers-shipbuilding
• Offshore/Onshore plants, oil/gas
• production platform
• Chemical and petro-chemical plants
• Water treatment-purification
• Steel and metal plants
• Military application
• Foundry
• Pulp and paper plants
• Food plants
• Textile industry
• Sugar refining
• Fire safe piping system