A43H型雙聯(lián)安全閥是一個Y型接頭上設(shè)兩個同樣規(guī)格的A47H型安全閥而構(gòu)成,其公稱通徑系指Y型接頭進(jìn)口通徑,其組合情況如下:
A43H type twin safety valve is composed of two A47H type saftety valves with the same specification which are fixed on a Y-shaped joint. The nominal diameter is the inlet diameter of the Y-shaped joint. Here is the table to show the combination