Throttle is by multi -functional water injection valve of non return

The utility model provides a throttle is by multi -functional water injection valve of non return, which comprises the following components: a valve body, it has inhalant canal to open in the valve body, and terminal the opening of inhalant canal has the perpendicular upwards passageway that sets up with inhalant canal, the grafting passageway no. 1 that has and make progress the passageway intercommunication is opened on the top of valve body, grafting passageway no. 1 is gone up to peg graft to have and is used for the airtight upwards valve clack of passageway, the valve body top is fixed with the valve gap that is used for airtight grafting passageway no. 1, open the oriented spliced eye that sets up down on the top surface of valve clack, open on the valve gap have run through about the valve gap terminal surface and with the grafting passageway no. 2 of the coaxial setting of spliced eye, grafting passageway no. 2 is gone up to peg graft has the valve rod, the top threaded connection of valve rod has valve -stem nut, peg graft in spliced eye department in the bottom of valve rod, be fixed with the support on the valve gap, valve -stem nut rotates and connects in support department, open the exhalant canal that has with a grafting passageway intercommunication on the valve body. The utility model discloses structural design is ingenious, reasonable, is worth popularizing and applying.