夹套保温止回阀主要用于石油、化工、冶金、制药等各类系统中，以输送常德下会凝固的高粘度介质。该系列阀门的夹套焊装于阀门的两法兰之间，阀门的侧面、底部设置有夹套的连接口。由于增加了夹套，此种阀门的连接法兰尺寸要比同一规格普通球阀的连接法兰大一到两个规格，但结构长度与同规格的阀门相同，夹套中可自由地流过蒸汽或其它热的保温介质，确保粘稠介质可顺畅地流过阀门。要外形尺寸GB1.6MPaDN1520253240506580100125150200250300L130150160180200230290310350400480600650750H9095100105110115140170200230255285290300Wt1415161718192429405883100105110GB2.5MPaDN1520253240506580100125150200250300L130150160180200230290310350400480600650750H9095100105110115140170200230260285290300Wt14151617181924294072104145180230GB4.0MPaDN3240506580100125150200250300L180200230290310350400480600650750H120140150160175200225260315320300Wt9121520334173104147180230GB6.4MPaDN3240506580100125150200250300L230260300340380430500550600775900H160170170190205230265310350480520Wt122029354768100142195250300GB10.0MPaDN1520253240506580100125150200250300L130150160180200230290310350400480600650750H9095100105110115140170200230255285290300Wt1415161718192429405883100105110GB16.0MPaDN1520253240506580100125150200250300L130150160180200230290310350400480600650750H9095100105110115140170200230260290290300Wt14151617181924294072104180180230)