VTB dreifach exzentrische Absperrklappe Serie

VTB triple eccentric butterfly valve series in two eccentric butterfly valve is a basis for oblique Angle(sealing surface),thus forming a triple eccentric butterfly valve.This structure in the process of hoist without abrasion and bruises, and cut off its small torque performance,long service life,also has the function of regulating and cut off two kinds. This series of products are widely used in petroleum,chemical industry,electric power,metallurgy,environmental protection,textile, paper and other industrial automation control system of the department. Applicable to liquid,gas,coal gas,natural gas,steam medium or adjustment by such flow control. This series product nominal pressure level,1.0,1.6,0.6 MPa,6.4 2.5,fencing,Nominal diameter DN100 1000mm,Suitable fluid temperature range - 100 + 5°C, Metal seal leakageVI rating for the class type,Soft seal leakageVI rating for the type of zero leakage; level,Flow characteristics such as approximate percentage. The body has to clip,flange,butt,jacket insulation structure,etc. Valves with standard,low temperature and three types. The valve actuator can with pneumatic actuators, piston pneumatic actuators, film electrical devices or manual. Also can with electro-hydraulic device with,can achieve 0.5 seconds faster and faster shut. According to the condition of hydraulic buffer device needs can be configured,thereby eliminating water hammer,the protection system pipeline security. Product structure Working principle VTB triple eccentric butterfly valve series in two eccentric butterfly valve is based on the Angle of a beta(see diagram)eccentric,forming a triple eccentric butterfly valve. This valve disc sealing in open-close when will instantly sealing seat from overcomes two eccentric butterfly valve sealing in open when the abrasion and scratches between,prolong service life sealing, But the disc and seat sealing seal face evenly,closing sealing circle and instantly sealing contact(evenly circumference),rather than the progressive forces (sealing circumference of non-uniform), can realize the valve with small torque shuts rigor,reach zero leakage. This valve seal, for torque pass strictly, and can realize the characteristics of double seal.