... valve features: ** Structural design complies with BS 5155.** Flange drilling acc. BS4504, Section 3.2, ANSI B16.1, Class125/100 ... be worm gear, pneumatic actuator and electric actuator. Actuator connection acc.ISO5211. ** Eccentric disc, dual parallel joist structure, Min. flow ... :Features: ** Structural design complies with BS 5155.** End connection acc. BS 4504, Section3.2, ANSI B16.1,class 125/150 ...