SAEL
Kumkang Valve
Trunnion Mounted Ball Valves
Double Bolck and Ball
CFA & CGA type ball valves have a sealing system which allows installation and service requiring double block and bleed
Sealing Principle
All CFA and CGA type ball valves are supplied with spring loaded seats to ensure that the seats are always in contact with the ball, providing a very efficient seal even at low line pressure. When the line pressure increases, the seat is forced into tighter contact with the ball providing a positive shut-off.
Fire Safe Construction
A secondary metal seat is provided to maintain contact between the seat and ball in the event the primary non-metallic seat is destroyed by fire.
CFA and CGA model valves are fire-safe by design. The double body and bonnet seals give maximum security. KUKA valves are fitted with special graphite seals so as to effectively stop all leakage in the event of a fire All KUKA Trunnion-Mounted ball valves have been tested to API-607.
Secondary Seat and Stem Sealing Option
CFA and CGA type ball valves are deigned to provide high integrity shut-off. Upon request, sealant lubrication fitting are available for CFA and CGA type. In case of seat insert or stem seal damage, external or internal leakages can occur. An emergency sealant injection can save the integrity of the valve by incorporating a sealant seal around the stem or between the seat and the ball.
IEC 61508 SIL 3
Assessed By: 