These valves use a spherical shaped closure member with a cylindrical bore through the member for passage of flow.

ball valves have many advantages.1. fluid resistance is small,equal to the drag coefficient with the length of the barrel.

Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of

Friday, March 23, 2012Installing a Ball Valve Cutaway of a simple manual ball valve 1) Body 2) Head 3) Ball 4) Lever handle 5) Stem Italiano: Sezione di valvola a sfera :1) corpo :2) tenute o sede :3

إعاقة والتفريغ على الجانب المصب من مقعد: عند تشغيل صمام الخروج، تفرز كتلة السائل، وتجويف في الجسم من الأمور ال