Pneumatic DN50-2000 ANSI 150-1500 Triple Eccentricity Valve Sil, ISO 15848, Ta-Luft Certified

This Triple eccentric hard sealed butterfly valve, whose sealing surface is a conical type, has an eccentric angle in the horizontal center, the valve stem relative to the flow channel center has two distance biases in its axial and the radial direction, thus the frictionless action between the gasket of the disc and the sealing face of the seat before valve closing is available. The pressure angle is larger than the friction angle on the sealing face to 
realize the extra-low open resisting force and rapid closing automatic tally sealing action. The valve features with advanced construction, reliable seal, long life, low cost, etc. It is an economical practical automatic control valve providing both control and cut-off functions and uses to the fluid services with large flow, low pressure drop and low seat leakage. 

Features

1, Triple eccentricity seal butterfly valve and actuator connection dimension was designed according to IS05211 standard, commonality, and easy to install. 
2, Triple eccentricity seal butterfly valve uses three eccentric structure, suitable for high temperature and high pressure and other complex conditions and requirements of strict cut off occasion, no dead zone while opening and closing, and small open torque. 
3, The valve body and disc with a variety of material combinations to meet the different needs of pressure, temperature and medium, the product with the temperature from -196ºC to 550ºC, and the nominal pressure from ANSI150 to ANSI2500. 
4, The valve seat and valve body are integrated structure, the valve seat sealing surface welding with high strength and corrosion resistant alloy materials to ensure the valve seal reliability, long service life and basically no maintenance. 
5, The sealing ring uses duplex stainless steel or multi-level combination seal material, the valve seat and the sealing ring structure is relatively independent, easy replacement and easy maintenance. 
6, The integral of the stem and the use of high strength stainless steel material allow large differential pressure withstanding. Stepped structure design can effectively prevent the stem flying out, guarantee the valve security. 
7, The shaft seal structure effectively prevents dirty medium impurities entering into the gaps between the valve body and valve stem to avoid deadlocking phenomenon. 
8, The packing system with disc spring dynamic load compensation structure can absolutely avoid the packing leakage happened to meet the requirements of TA-Luft standards. 
9, The product with metal seal ring structure can be up to ANSI V grade leakage, and multi-level combination seal structure can be up to zero leakage. 
10, Product design and material selection comply with the relevant standards and laws, regulations, energy-saving requirements of environmental protection. 

Triple eccentric structure


Detailed view