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LEINA Explain the role of flange ball valve assembly accessories

• Blow-Out Proof Stem The internal entry stem is machined with a heavy shoulder to prevent blowout.
• Anti-Static Configuration Anti-static devices are included at two points on the valve stem to provide continuous ball-to-stem and stem-to-body grounding, to prevent build-up of static charge in the valve.
• Live-Loaded Stem Seals Stem seals are live-loaded using Belleville washers to provide consistent sealing forces, reducing or eliminating the need for frequent seal adjustment.
• Fully Encapsulated Body Seals Provides consistent and controlled loading of the body seal compression through a full metal-to-metal contact joint design, eliminating seal extrusion and potential body joint leakage.
• Integral Mounting Pad Ideal for actuation, ISO 5211 mounting dimensions simplify fit and alignment between valve, bracketry, and actuator. Permits easy field conversion from manual operation to actuation.
• Lockable Handle Sharpe Series 50 ball valves are supplied with lever handles designed to permit locking the valve in either the open or closed position. Sizes through 2” are supplied with a latch engaged at open and closed positions to prevent inadvertent operation. Larger sizes have a lockable pipe handle.
• Slotted Seat Design Relief slots are provided at the perimeter of the seats to equalize pressure in the body cavity with the upstream line when the valve is closed, preventing upstream seat extrusion and enhancing downstream seating performance.

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