What about the water inflow of the electric low load regulating butterfly valve in Lanzhou? There are two main engine structures for operating the thrust valve electric device: one is to output torque directly without a thrust disc; The other is to configure a thrust disc, and the output torque is converted into output thrust through the stem nut in the thrust disc.
、 Executive standard of electric ball valve 1. Planning and production: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357.
2. Flange dimensions: JB/T74 ～ 90 (JB74 ～ 90), GB9112 ～ 9131, HGJ44 ～ 76, SH3406, ANSI B16.5, JIS B2212 ～ 2214, NF E29-211, DIN2543.
3. Structure length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.
