本公司(sī)生産的系(xì)列自力式(shi)氮封調節(jiē)閥主要由(you)控制閥♈門(mén)、執行 器、指(zhi)揮器、壓力(li)彈簧等部(bù)件組成。主(zhǔ)要🧡用于保(bǎo)持容器頂(dǐng)部保護 氣(qì)體(一般為(wéi)氮氣)的壓(yā)力‼️恒定，以(yi)避免容器(qi)内物料與(yu)空氣直接(jie)接 觸，防止(zhǐ)物料揮發(fa)、被氧化，以(yi)及㊙️容器的(de)安🏃全。适用(yòng)于各類大(dà)型 儲罐的(de)氣封保護(hu)系統。 

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.