旁路
By-Passes
在打开主阀门之前，可以采用旁路来均衡进口和出口的压力，使得阀门操作更加容易。也可以用来对出口进行预热，和防止由于过于快速膨胀可能导致的损坏。在所有美国尼伯科铸铁阀门上可以配置组合型旁路，并且按照MSS旁路和排泄连接标准SP-45的要求进行安装。在标准铸铁阀门上安装的旁路是一个截止阀。订购时请在型号上加上(Z)，例如：F-000-Z。
A By-Pass can be used to equalize pressure
at inlet and outlet before opening main valve; facilitates easy
valve operation. Can also be used for preheating outlet lines and
eliminate damage from too fast expansion. The built up type By-Pass
is available on all NIBCO iron valves and is attached in accordance
with MSS By-Pass and Drain Connection Standard SP-45. The By-Pass
valve used on standard iron valves is a globe valve. Specify by
adding (Z) to Fig. No, i.e. F-000-Z.
主阀门通径(英寸)
Main Valve Size (In.) |
4" |
5" |
6" |
8" |
10" |
12" |
14" |
16" |
18" |
20" |
24" |
旁路阀门通径(英寸)
By-Pass Valve Size (In.) |
1/2" |
3/4" |
3/4" |
3/4" |
1" |
1" |
1" |
1" |
1" |
1" |
1" |
在美国尼伯科铸铁闸阀、截止阀、角阀和常规旋启式止回阀上的旁路通径符合适用于蒸汽应用的MSS规则SP-45，表II，系列A。
Sizes of By-Pass valves on NIBCO Iron Gate,
Globe, Angle and regular Swing Check Valves conform to MSS Specification
SP-45, Table II, Series A for steam service. |
