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如何订购
how to order
蝶阀技术资料(6)
Butterfly Valve Technical Information (6)

美国尼伯科有限公司

扭矩参数
Torque Data

 
LD/WD 2000系列扭矩参数
LD/WD 2000 Series Torque Data
通径
Size
100 PSI 200 PSI 250 PSI
2" 140 180 195
21/2" 190 235 255
3" 250 300 325
4" 430 530 580
5" 590 790 845
6" 795 1,035 1,115
8" 1,850 2,350 2,600
10" 2,350 2,900 3,125
12" 3,875 5,390 6,145
 
LD/WD 1000系列扭矩参数
LD/WD 1000 Series Torque Data
通径
Size
50 PSI 75 PSI 100 PSI  
14" - 3,837 - 4,870
16" - 5,003 - 6,685
18" - 6,567 - 8,958
20" - 8,540 - 11,950
24" - 13,220 - 18,680
30" 28,320 29,782 30,864 33,336
36" 40,624 41,875 43,480 46,528
42" 69,744 72,076 74,632 79,864
48" 96,648 100,520 103,840 111,112
 
N200系列扭矩参数
N200 Series Torque Data
通径
Size
100 PSI 200 PSI
2" 120 220
21/2" 130 320
3" 180 480
4" 280 820
5" 360 1,162
6" 600 1,560
8" 1,100 2,890
10" 2,040 5,270
12" 4,500 8,050
 
N150系列扭矩参数
N150 Series Torque Data
通径
Size
100 PSI 200 PSI
14 4,125 4,870
16 5,590 6,685
18 7,354 8,958
20 9,670 11,950
24 14,860 18,680
注意:这里所列的扭矩参数适用于普通用途(清洁水,常温)。对于非润滑液体,高温或侵蚀性流体介质,请咨询美国尼伯科技术服务部门。
Note: Torque Data shown is for general service (clean water, ambient temperatures). For non-lubricating, high temperatures or aggressive media, consult Nibco Technical Service.

蝶阀扭矩参数
Butterfly Valve Torque Data

  扭矩是操作阀门所需的旋转作用力。蝶阀上的这种旋转作用力取决于三个因素:(1)阀瓣与阀座密封的摩擦力;(2)轴承摩擦力;(3)动力矩。
  Torque is the rotary effort required to operate a valve. This turning force in a butterfly valve is determined by three factors. (1) Friction of the disc to seat for sealing (2) Bearing friction (3) Dynamic torque.
  最小启动力矩是在某个压差下,轴承摩擦力和阀座/阀瓣干扰摩擦力所产生的扭矩的总和。这个值通常是操作阀门所需扭矩的最大值,用于决定执行机构的选型。左侧所列的参数值是通过性能试验而得到的,包括了保险余量。所列的扭矩值对于常温下的水和润滑液体有效。对于干燥或非润滑液体的扭矩值,请咨询美国尼伯科公司的用户服务代表。
  Breakaway Torque is the total of the torques resulting from bearing friction and seat/disc interference friction at a given pressure differential. This value is normally the highest required torque to operate a valve, and is used in sizing actuators. The values listed at the left are based on performance tests and include a safety factor. The torques listed are valid for water and lubricating fluids at ambient temperature. For dry and non-lubricating fluids, contact your NIBCO customer service representative.
  通径DN200以上的蝶阀应用于液体时,倾向于关闭阀门的动力矩明显增加。由于这种原因,推荐使用齿轮操作机构或执行机构。
  Butterfly valves, sizes 8" and larger, when used on liquids, show a marked increase in dynamic torque which tends to close the valve. For this reason, gear operated or actuated valves are recommended.
  所列扭矩适用于EPDM(三元乙丙橡胶)。在计算适用于Buna-N(腈基丁钠橡胶)或氟橡胶的扭矩时,请对所列的扭矩值乘以1.25。对于应用于干燥流体介质的阀门的扭矩值,请咨询工厂。
  Torque listed for EPDM. When calculating torques for Buna-N, or Fluoroelastomer multiply listed torque by 1.25. Consult factory for dry service valves.

FC/FD27*5/57*5 GD4765/4775系列扭矩参数
FC/FD27*5/57*5 GD4765/4775 Torque Data
通径
Size
100 PSI 200 PSI 300 PSI
2" 48 67 83
21/2" 48 67 83
3" 100 134 168
4" 185 251 317
5" 294 410 499
6" 520 705 890
8" 1,070 1,495 1,798
10" 1,550 2,214 2,654
12" 2,150 3,024 3,662
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