Contrast-test shows that bonnet with grooved ball chamber ispreferred: ball drift mobility 0.-0.mm, flow area ratio 0.-0. (maximum 0. 0) and the ball drops down to seat swiftly.
Contrast-test shows that bonnet with grooved ball chamber ispreferred: ball drift mobility 0.-0.mm, flow area ratio 0.-0. (maximum 0. 0) and the ball drops down to seat swiftly.
经对比,槽形球室型阀罩的性能较好,阀球飘忽量0.～0.mm,流道面积比0.～0.,最大达0. 0,阀球下落迅速。