本公司(si)生産的系列自(zi)力式氮封調節(jiē)閥主要由控制(zhì)閥門、執行🤞 器、指(zhǐ)揮器、壓力彈簧(huáng)等部件組成。主(zhǔ)要用于保持容(rong)器頂部保護 氣(qi)體(一般為氮氣(qì))的壓力恒定，以(yǐ)避免容器内物(wu)料與空氣直接(jie)接 觸，防止物料(liào)揮發、被氧化，以(yǐ)及容器的安全(quán)。适用于各類大(dà)型❓ 儲罐的氣封(fēng)保護系統。 

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.