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Nuova DLM Fully Welded ball valves can be provided with operating extensions to permit underground installation or installation in remote or inaccessible areas.
Extensions for the valve actuating mechanism equipped with position indicators,can be provided on all valves.
Underground and “double block and bleed” valves are supplied with vent and drain connections using piping with pressure rating equal or greater than valve pressure rating.
For underground service the extensions are furnished water-tight.
Piping of drain and sealant is also extended. The length “M” should be provided by customer.
Valves are available in full or reduced port.
The stem seal integrity is achieved with three seals, two o-rings and a firesafe graphite gasket.
Anti blow-out stem design permits replacement of the graphite gasket whilst the valve is under pressure. Provision of emergency sealant injection is fitted as standard.
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SIZE:
from 2” to 36” |
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RATING:
from ANSI 150 to ANSI 2500 |
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MATERIALS:
Carbon steel, Stainless steel, Exotic and Duplex materials |
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USED FOR :
Gas Oil and Petrochemical service
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