气动O型切断球阀具有流通能力大、结构紧凑、密封性能好、 寿命长等特点，经济实用、易于维护。广泛应用于石油、化工、 天然气、电力、冶金、食品、制药等要求严密切断的场合，也可 适用于水、蒸汽、油品、液化气、天然气、煤气等介质。另外可 根据客户的需求选择防火型、特殊硬化处理型，提供更安全、更 广泛的应用。 

The pneumatic O-type cut-off ball valve is characterized by large circulation capacity， compact structure， good sealing performance and long service life， which is also economical， practical and easy to maintain.It is widely used in situations required strict cut-off including petroleum， chemical industry， natural gas， electric power， metallurgy， food and pharmaceutical， and also suitable for water， steam， oils， li que fed gas， natural gas， coal gas and other media.In addition， it can also be fre-proof and special hardening treatment according to the needs of customers to provide safer and more extensive applications.