Double eccentric hemispherical valve product characteristics as follows:
一、密封副（阀芯，阀座）——双金属，实现金属球面环带硬密封，防火防爆；
A, (valve, valve seat sealing) -- double metal, metal spherical ring seal, fire and explosion;
二、密封严紧，阀芯和阀座的密封是球面线接触，靠三维偏心实现零泄漏；
Two, tight seal, sealing the valve core and valve seat is a spherical line contact, through three eccentric to achieve zero leakage;
三、密封副的阀芯留有补偿量，阀门使用较长时间发现密封副磨损时，只需松动手轮侧的限位螺栓，关闭时再转动少许，仍可实现可靠密封，延长使用寿命。
Three, the valve sealing a compensation amount, the valve used for a long time that seal wear, limiting bolt only loose the hand wheel side, then turn off a little, can still achieve a reliable seal, extend the service life.
四、可将压紧套拧掉，调整或更换阀座，阀门仍可继续使用，避免了现行众多阀门密封失效后整台报废的弊端。
Four, set screw can be pressed out, adjust or replace the valve seat, valve can be used, to avoid the disadvantages of the existing valve seal failure after many scrap.
目前已畅销在钢铁行业的煤粉喷吹，氧化铝行业的矿浆、母液和氧化铝粉输送，电力行业的水力（或干）除灰，石化行业，燃气行业等场合。
At present, has been popular in coal injection of steel industry, pulp, mother liquor and aluminum oxide of alumina industry in transportation, hydro electric power industry (or stem) ash, petrochemical industry, gas industry etc..
