The Extension consists of a length of steel tube with a coupling on one end to attach to the valve, and a coupling on the other end to attach to a handwheel or some other type of operating device.
阀杆加长件由带连接在阀门上的联轴节的钢管长度，连接在手轮上的联轴节，或其它类型的操作机构组成。
And the decompression can be directly realized through lifting the pressure-limiting valve after stewed food. The device has convenient decompression and high operating safety, and saves water.
在食物蒸煮完成后，可直接提起限压阀来实现降压，泄压方便、操作安全性高，节约用水。
And the decompression can be directly realized through lifting the pressure-limiting valve after stewed food. The device has convenient decompression and high operating safety, and saves water.
在食物蒸煮完成后，可直接提起限压阀来实现降压，泄压方便、操作安全性高，节约用水。
应用推荐