用途User 本蝶阀适用温度≤80℃，用于石油、化工食品医药轻纺、造纸、电力、给排 水、气体管路上，作调节流量和截流介质的作用，具有补偿管道热胀冷缩的功能。 This butterfly valve，with the suitable temperatu re as=80℃，is used for the pipeline of petroleum，chemical，food，medicine，ight&textile，paper-makin9，water supply and drainage，gas for the flow adjustment and medium cut-off and holds the function to compensate heat-expansion cold-contraction of the pipeline 特点Characteristic 1、设计新颖、合理、结构独特、重量轻、操作方便、起闭迅速。 2、本伸缩蝶阀既能起到调节流量和截流作用，又能补偿管道温差，所产生的热胀冷缩功能，同时也便于安装和拆卸，为一阀多用产品。 1 Brand-new and reasonable design,unique structure，light weight，easy operation，quick open-close. 2 This telescopic butterfly valve can act as flow adjustment and cut-off and also compensate the heat-expansion cold-contraction of the pipeline caused due to temperature difference and is conveniently mountable and removable，as an one-valve muIti-purposes product 安装注意事项Precautions in installation 1、本蝶阀安装前必须清洗内腔杂物。 2、本阀可有一定范围内伸缩，安装前必须松开伸缩部位的密封垫压盖，然后待本阀门与管道所需要的长度后，再锁紧伸缩密封压盖。 1 Clear out the impurities inside of the internal cavity before to install this butterfly valve. 2 This valve is stretchable in a certain range and，before installation，the sealing pad of the stretching part shall be loosened and，then，whlength is set for both valve and pipeline，tightened.

名称Name 材料Material 阀体body 铸铁、球墨铸铁、铸钢、不锈钢 Cast iron,ductile iron,cast steel stainless steel 阀板Disc 铸铁、球墨铸铁、铸钢、不锈钢 Cast iron,ductile iron,cast steel stainless steel 阀杆stem 2Cr13、不锈钢衬 Stainless steel lined 密封圈seat 耐磨橡胶、丁腈橡胶等wearable rubber,NBR etc. 填料packing 丁腈橡胶V型垫、柔性石墨V-type pad of NBR,flexible graphite

法兰连接尺寸和主要外形尺寸Flange size and main dimensions