JZJ2S series Roots water ring vacuum unit JZJ2S series Roots water ring unit is by ZJ Roots pump as the main pumping, two-stage water ring pumps or Roots - water ring as a backing pump unit consisting of pumping unit. It can be used in addition to pumping gas in general, but also can contain water or a small amount of dust suction gas. That compared with the general mechanical vacuum pump, oil pollution is not afraid, not afraid of water, gas and dust, compared with the general water ring vacuum pumps, high vacuum and high vacuum conditions in the pumping speed characteristics of a large factory specialized production of vacuum pumps, water ring vacuum pumps, rotary vane vacuum pump, can also be customized according to user demand, welcome new and old customers come to order!