本公司(sī)生産的系列(lie)自力式氮封(feng)調節閥主要(yao)由控制閥門(men)、執行 器、指揮(hui)器、壓力彈簧(huáng)等部件組成(chéng)。主要用于保(bao)持容器⭕頂部(bu)保護 氣體(一(yī)般為氮氣)的(de)壓力恒定，以(yi)避免容器内(nei)物😘料與空㊙️氣(qì)直接接 觸，防(fáng)止物料揮發(fa)、被氧化，以及(jí)容器的安全(quán)。适用于☔各類(lei)大型 儲罐的(de)氣封保護系(xì)統。 

Serial self-operated nitrogen seal regulating valve of the company is mainly composed of several parts including actuated valve， actuator， director and pressure spring.It is utilized to maintain constant pressure of protective gas(generally nitrogen) on the top of containers for avoiding direct contacts of containers and materials， preventing materials from vol at il izing and being oxidized and ensuring containers safeties.It applies to air seal protection systems of all kinds of large-scaled storage tank.