Consists of: 1. main valve, 2. regulating valve, 3. filter etc. parts and used in the pump directly water supplying and draining system in industries, mines, enterprises and high buildings to act as a stop valve, check valve, electric valve and water hammer eliminator four functions, without need of an electric controller and external power and automatic open-close upon the normal way, of quick close, slow close and energy suction cavity three preventing and eliminating water hammer functions, capable of effectively enhancing the system safety and reliability and meeting with the equipments in a systematic project. |
