Figure 2 D741X-10 heavy hammer-type brass gate valve fluid control principle of signal

     2, technical characteristics and main technical parameters

     2.1 Technical Features

     Machine torch assembly with hydraulic dual-use system for the whole structure is compact, easy to operate.

     In the absence of external power supply, the storage can take advantage of gravity to shutdown. When the unit has been growing too fast, the bearings overheating and loss of excitation when the generator can automatically shut down, which had automatic protection unit.

     Closed with a speed of two properties.

     The use of solenoid-controlled spindle lock body, a safe, reliable operation and a small force.

     2.2 The main technical parameters, indicators

     To D741-10-type heavy hammer-type brass check valve as an example, the main technical data are: pressure, 1MPa; diameter, φ400, φ500, φ600, φ800, φ1000, φ1200; maximum use of head, 100m; the highest step-up head, 145m; Open time, about 5min manual, electric around 1min; closing time, fast paragraph 5 ~ 10s; slow clearance above 10 ~ 50s; the scope of protection has been growing too fast, 1.8 times the rated speed (adjustable).