本公司生産的(de)系列自力式氮封(fēng)調節閥主要由控(kòng)制閥門、執行 器、指(zhǐ)揮器、壓力彈簧等(děng)部件組成。主要用(yòng)于保持容器頂部(bu)保護✏️ 氣體(一般為(wei)氮氣)的壓力恒定(ding)，以避免容器内物(wu)料與空🔞氣直接接(jie) 觸，防止物料揮發(fa)、被氧化，以及容器(qi)的安🏃全。适用于各(gè)類大型 儲罐的氣(qì)封保護系統。 

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.