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Current Location:HomeProductsIndustrial valveNon-contact Rising Stem Ball Valves Non-contact Rising Stem Ball Valves

Non-contact Rising Stem Ball Valves

Pentair non-contact Rising Stem Ball Valves have a single-seat non-friction design that is able to operate and has proven an exceptional long life span under extreme conditions.


SIZE: 1” ~ 36” (DN25 ~ DN900)


BORE: Reduced or Full (Full is piggable)


PRESSURE: 150# ~ 2500# (PN20 ~ PN420)


TEMPERATURE RANGE: -196°C ~ 538°C


CONNECTIONS: Wide choice on request


MATERIALS: Wide choice on request


Non-contact Rising Stem Ball Valve (RSBV) is designed to avoid issues of trunnion mounted, floating ball and other conventional valve types under the following extreme conditions:


HIGH / LOW TEMPERATURE AND TEMPERATURE FLUCTUATION


HIGH PRESSURE / HIGH DIFFERENTIAL PRESSURE


MEDIA WITH SOLID PARTICLES


FREQUENT SWITCHING


(ESD) EMERGENCY SHUTDOWN / FAST STROKE



Its HIGH PERFORMANCE in extreme conditions is secured by the following characteristics:


SINGLE SEAT DESIGN resulting in no adverse effect from thermal expansion.


METAL TO METAL SEALING. No weak parts (such as springs) are required in order to obtain perfect sealing. Sealing is obtained mechanically - independent on line pressure.


FRICTION-FREE OPENING AND CLOSING. The Rising Stem Ball Valve sealing mechanism is based upon axial movement only, compared to standard Ball, Gate, Plug and butterfly valves having their sealing mechanism based upon shear force, friction and tearing. The Rising Stem Ball Valve sealing is not liable to friction or tearing as there is no contact between ball and seat during rotation of the ball. This friction free quarter turn mechanically energised sealing means no abrasion on the seal and, compared with other types of valves, an exceptional long life with up to zero leakage during the whole life.


SELF-CLEANING sealing surfaces due to high velocity flow during opening and closing.


LINEAR STEM MOVEMENT ONLY resulting in strong and controlled opening and closing ?1 inch per 1 second“.


THE SELF-LOCKING OPERATING MECHANISM on all Control Seal valves secures the closing member from rotating due to in-line forces. As a result there is no danger of line slam or shock.


IN-LINE MAINTENANCE AND SERVICE. Top-access for stem packing renewal is possible while the valve is in-line and top of the valve is closed by back seat. TOP ENTRY for easy service and possibility to exchange all internals including seat while the valve is in-line.



APPLICATIONS


Molecular Sieve / LNG Dehydration units / Gas drying


Hydrocracking units / Hydrogen service


Petrochemical - wide range of applications


Hot oil


Steam service



USED AS


Isolation valve


Frequent switching valve


Blow-down valve


General shutdown valve


Emergency shutdown valve


(Abreviations / tag numbers: KV, MOV, BDV, ESD, XV and more)


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