变压器蝶阀 对夹式A型中线蝶阀 D371-16C 变压器配件 蝶阀阀门 逆止阀

　　对夹式（A型）中线蝶阀

　　Wafer type (type A) center line butterfly valve

　　D71/371/971/671X/F4-10/16C/Q/P

　　D71/371/971/671X/F4-10/16C/Q/P

　　选用说明

　　Selection instructions

　　选用对夹式（A型）中线蝶阀一般依据下面原则：

　　The selection of wafer type (type A) center line butterfly valve is generally based on the following principles:

　　1、 由于蝶阀相对于闸阀、球阀压力损失比较大、故适用于压力损失要求不严的管路系统中。

　　1、 As the pressure loss of butterfly valve is relatively large compared with gate valve and ball valve, it is suitable for pipeline systems with lax pressure loss requirements.

　　2、 由于蝶阀可以用作流量调节、故在需要进行流量调节的管路中宜于选用。

　　2、 As the butterfly valve can be used for flow regulation, it is suitable for selection in the pipeline requiring flow regulation.

　　3、 由于蝶阀的结构和密封材料的限制、不宜用于高温、高压的管路系统、一般工作温度在150P以下、公称压 力在PN16以下。

　　3、 Due to the limitation of butterfly valve structure and sealing materials, it is not suitable for high temperature and high pressure pipeline system. The general working temperature is below 150P and the nominal pressure is below PN16.

　　4、 由于蝶阀结构长度比较短、且又可以做成大口径、故在结构长度要求短的场合或是大口径阀门宜选用蝶阀。

　　4、 Due to the short structural length of butterfly valve and large diameter, butterfly valve should be selected for occasions requiring short structural length or large diameter valve.