Specifically designed to provide a compact installation for gauge or transmitter instruments, these valves feature reduced weight and minimum leak paths.
为量规和发送仪器特别设计，结构简单、紧凑，可以降低重量、使泄露通路最小化。
2
A differential pressure gauge is recommended for test no. 1 rather than a manometer for the following reasons: It utilizes minimum time to perform the test.