本文件适用于尺寸为NPS 1/2（DN 15）至NPS 26（DN 650）的夹管阀或夹管阀设计，包括夹管或夹管元件。目的本文件旨在通过提供控制阀的安装面对面尺寸，帮助用户进行管道设计，控制阀包括夹紧或夹紧元件，且法兰与ANSI B16相匹配。1 125级和/或ANSI B16。5 150级法兰。本文件也适用于手轮操作夹管阀，其法兰与125级和150级匹配，但不包括电磁阀- 驱动阀和直接流体驱动阀。由于夹管阀的应用范围广泛，仅对一套夹管阀进行标准化是不合理的。有些应用程序更适合较短的面对面交流，而另一些应用程序则需要更长的时间。建议夹管阀用户根据夹管阀制造商的要求、其独特的工艺条件以及所用弹性体或橡胶的类型与他们进行讨论。本文档中的所有面对面尺寸已成功应用于整个行业。

This document applies to valves, sizes NPS 1/2 (DN 15) through NPS 26 (DN 650), of the clamp or pinch valve design incorporating clamp or pinch elements.PurposeThe purpose of this document is to aid users in piping design by providing installed face -to-face dimensions for control valves that incorporate clamp or pinch elements and have flanges that mate with ANSI B16.1 Class 125 and/or ANSI B16.5 Class 150 flanges.This document also applies to handwheel-operated pinch valves, which have flanges that mate with Classes 125 and 150, but excludes solenoid-actuated valves and direct fluid-actuated valves.Due to the extensive variety in applications for pinch valves, it is not reasonable to standardize on only one set. Some applications are better suited to a shorter face-to-face, whereas others need extra length. Users of pinch valves are advised to discuss with the pinch valve manufacturers based on their requirements, their unique process conditions, and the type of elastomer or rubber used.All face-to-face dimensions in this document have been applied successfully throughout industry.