壓力平衡倒置油封旋塞閥適用於石油、化工、製藥、化肥和電力，公稱壓力為150-1500lbs級，

工作溫度為29-180°C 在電力行業等各種工況下切斷或接通管道上的管道介質。

Pressure balanced inverted oil seal plug valve is applicable to petroleum, chemical industry, pharmacy, chemical fertilizer and electricity with nominal pressure o f classl 150 - 1500lbs

and working temperature of 29 - 180 ° C Cut off or connect the pipeline medium on the pipeline under various working conditions such as power industry.