An underground resilient seated gate valve with an extension spindle, telescopic drive rod, and surface box is a specialized type of valve designed for underground applications, such as water supply systems, where the valve needs to be buried below the ground surface.
Installation: The underground resilient seated gate valve with the extension spindle, telescopic drive rod, and surface box is installed below the ground surface, with the valve body buried in the pipeline.
Extension Spindle and Telescopic Drive Rod: The extension spindle extends from the valve body to the surface level, passing through the telescopic drive rod. The telescopic drive rod allows the height of the extension spindle to be adjusted to match the depth of the valve's installation.
Surface Box: The surface box is positioned at the ground level and provides a protective enclosure around the extension spindle and telescopic drive rod. It allows easy access to the valve's operating components for maintenance and operation.
Operating the Valve: To operate the underground gate valve, a wrench or valve key can be used to turn the extension spindle within the surface box. Turning the spindle raises or lowers the gate inside the valve body, controlling the flow of the fluid.
a) Valve design according to DIN3352, EN1074
b) Face to face dimensions according to DIN3302 F4/F5 EN558-1,
c) Standard flange drilling to EN1092-2, ISO7005-2
d) Hydraulic test according to EN12266, ISO5208
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