Resiliens Seat Gate Valve with Extension Stem / Visual Indicator For Buried Underground

This device allow s the operating cap to correctly positioned in the surface box for variable covering heights.

It is retractable in case of excavation of the road surface, so avoiding the disposal of the operating unit.

• Can be mounting under ground
• Top with surface box
• Suitable for operator by wrench

Gate valve is a valve that the valve plate moves along the vertical direction 

in the pipeline Advantages of gate valve:

1. Small fluid resistance

2. The torque for opening and closing is small, so it is easy to open and close.

3. The medium flowing direction is not restricted, and it doesn't disturb flowing 

 and reduce the pressure of pipeline.

4. Short length structure

5. Good sealing performance

6. Simple shape, good casting process, widely used

Resilient seated non rising stem Germany standard, outline and connecting dimension 

according to DIN3202(F4)(ISO 14 series);  BS EN1092.2(PN1.0MPa,10 bar){Figuration and connecting size of short series in Chinese standard are same with

 F4 series in Germany standard}