The high performance Valtek Valdisk rotary control valve uses pressure assisted Jam-lever ToggleTM seating concepts to achieve bi-directional, bubble-tight shutoff while maintaining low breakout torque – at both high and low pressure drops. Valdisk is available in carbon steel, 316 stainless steel and other alloys and is available in ANSI Classes 150 through 2500, sizes 2 through 30-inch.Jam-lever Toggle seating assures low breakout torque by utilizing the pressure drop across the valve to aid the seating process. Since much of the seating force is supplied by the pressure drop, the need for strong actuator seating force – and therefore breakout torque – is reduced. Combined with Valdisk¡¯s high-thrust cylinder actuator and eccentric-cammed disc, it is possible to achieve especially high performance throttling – even in large pressure drops close to the seat.
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