球阀执行机构和控制机构
Ball Valve Actuation and Control

流量平衡阀
Circuit Balancing Valves

球阀执行机构参数表
Ball Valve Actuation Data Sheet

系统控制球阀 第105-106页
System Control Ball Valves Pages 105-106

扭矩表 第107-108页
Torque Charts Pages 107-108

执行机构安装参数 第109-112
Actuator Mounting Data Pages109-112

三通青铜不缩径端口T/S-585-W3系列
Three-Way Bronze Full Port T/S-585-W3 Series
两件式不锈钢/碳钢缩径端口T-580-S6/TC-580-CS-R
Two-Piece SS/CS Reduced Port T-580-S6/TC-580-CS-R
三件式青铜缩径/不缩径端口T/S-590/595系列
Three-Piece Bronze Reduced/Full Port T/S-590/595 Series
三件式不锈钢/碳钢不缩径端口TM/KM/BM-590/595系列
Three-Piece SS/CS Full Port TM/KM/BM-590/595 Series

　　对于应用在球阀上的执行机构的个别尺寸，请咨询您的尼伯科技术服务代表。
　　For individual sizing of actuators to ball valves consult your NIBCO technical service representative.

　　扭矩
　　Torque:
　　扭矩是操作阀门所需要的或执行机构所产生的有效的旋转力。扭矩单位通常为英寸/磅或英尺/磅。这种旋转力受下列三种因素影响：
　　Torque is the effective rotary power required by a valve and/or delivered by an actuator. Torque is normally stated in inch/pounds or foot/pounds. This turning force in a ball valve is affected by three factors:

1. 球与阀座的摩擦力
   Friction of the ball to seat
2. 轴承摩擦力（填料）
   Bearing friction (packing)
3. 动力（压力）
   Dynamic forces (pressure)

　　扭矩 = 距离 x 力
　　Torque = Distance x Force

　　最小开机扭矩是上述三项因素的总和。这个数值通常是操作阀门所需扭矩中最高的，并且用于确定执行机构的型号。对应参数表上所列的扭矩值适用于常温水和润滑液体。对于干的和非润滑液体，请咨询您的尼伯科技术服务代表。
　　Breakaway Torque is the total of the three factors listed above. This value is normally the highest required torque to operate a valve and is used in sizing actuators. The torque values listed in the corresponding charts are valid for water and lubricating fluids at ambient temperature. For dry and non-lubricating fluids, consult your NIBCO technical service representative.

　　用于法兰球阀的执行机构安装尺寸，请参阅第77-84页。
　　Actuator mounting dimensions for flanged ball valves, see pages 77-84.