Triple Eccentric Butterfly Valve

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LYV® Triple Eccentric Butterfly Valve Introduction

The stem axis deviates from the center of the disc and the center of the body at the same time, and the axis of rotation of the valve seat and the axis of the valve body channel has a certain Angle, known as three eccentric butterfly valve

LYV® Triple Eccentric Butterfly Valve Parameter (Specification)

Structural form

Triple eccentricity

Design basis

GB

API

Driving mode

Manual, worm gear and worm drive, manual, electric

Design standard

GB/T 12238

API609, MSS.SP-68

Structural length

GB/T12221

ASMEB16.10, API609, MSS.SP-68

Connecting flange

JB/T79 JB/T82, GN/T9115

ASME B16.5, ASME B16.47

Test and inspection

JB/T 9092

API 1598

LYV® three eccentric butterfly valve Feature And Application

Typical Triple Eccentric Butterfly Valve, in addition to the stem and valve plate have two eccentric, valve plate and seat sealing surface is inclined round table shape (this is the so-called three eccentric third eccentric). When the valve is closed, the valve plate is pushed forward because of eccentricity. The valve plate and the valve seat do not produce friction in the closing process. The valve plate is directly pressed on the valve seat, so the service life of the valve; In addition, because the sealing ring of this valve (whether installed on the seat or valve plate) has a certain elasticity, and there is a small amount of gap between the boss and the elastic ring in the elastic ring can make the elastic ring slightly displacement; When the valve is closed, the elastomer seal ring can automatically move to the position where the force is the most uniform by the action of the closing force; Coupled with a small amount of elastic ring deformation, so that the seat at the seal ring uniform force, seal state. It is widely used for medium temperature ≤425℃ metallurgy, electric power, petrochemical industry, water supply and drainage and municipal construction and other industrial pipelines, for regulating flow and load cut-off body use

Three eccentric butterfly valve as the crystallization of the latest technology of the valve, Yang all kinds of valves long, avoid all kinds of valves short, will be more and more attention by the majority of users and designers. Its maximum pressure rating can reach 2500 pounds, standard caliber can do 48 inches, and to clamp, lug, flange, ring, butt welding, jacket, all kinds of structural length can be corresponding, but also because of the large choice of materials, high and low temperature and a variety of acid, alkali and other corrosive media can also respond to. Especially in the large diameter, with its zero leakage advantage, in the shutoff valve, is constantly replacing the coarse gate valve and ball valve, similarly, with its excellent control function, in the control valve, is also constantly replacing the heavy globe valve. As a fact, it is used in various important pipelines such as process control in oil and gas exploitation, offshore platforms, petroleum refining, petrochemical industry, inorganic chemical industry, energy power generation and other major industrial fields, including China

LYV® three eccentric butterfly valve Details