Water heater is also called water supply, supply air or water, tap. It is a necessary tool for water injection and supply for water injection and air supply in the coal mining, coal mine drilling and drilling operations. Our company produces the water injection series products, the structure is compact and reasonable, the use of high wear-resistant sealing parts, no leakage, high pressure, the use of life maintenance free metallurgy bracket, the operation is more stable, longer service life. This product is divided into front drive type and the rear follower type according to the transmission pattern. Whenused according to different types of drill pipe type selection.