January 10, 2017

Feature: The features and uses of hydraulic slow closure ball valves

What to expect when specifying hydraulic ball valves for a project

Hydraulic slow closure sanitary ball valves provide small flow resistance coefficient, high degree of automation, wide range of functions, and stable and reliable performance.

These features have been applied in all kinds of industries and fields, with the main applications including:

  1. Replacing the functions of electric gate valves and sanitary check valves at the outlet of a water pump, which integrates the machine, electric, and liquid system, thus reducing the area covered and infrastructure spending.
  2. Electro-hydraulic control function is complete. Hydraulic ball valves can be debugged and controlled as a stand-alone system on site without additional configuration. They can also be used as a device unit of a distributed control system (DCS), managed by central computers through an I/O channel to achieve coordinated operation with pumps, hydraulic turbines, bypass valves and other pipeline equipment. The valves can also be manually opened and closed even without power supply, meeting the debugging and control requirements of valves under special working conditions.
  3. Hydraulic ball valves are highly controllable and adaptable and they provide a wide range of adjustment. The electro-hydraulic control system has multiple regulating points. According to different pipe control requirements, the opening and closing program can be set up to ensure that the valve can automatically open and close quickly or slowly based on pre-defined time and angles when the valve opening and closing requirement is met. The valve can also be closed without electricity, which effectively eliminates destructive water hammer, prevents accidents like runaway pumps and hydraulic turbines, reduces the pressure fluctuations in the pipeline systems, and ensures safe and reliable running of the equipment.
  4. The main valve sealing surface is triple eccentric metal sealing or double eccentric rubber sealing. Opening and closing it is easy, and the sealing is reliable. There is also additional increased eccentricity, enabling the valve to have a good self-closing and self-sealing performance. Medium and small-diameter ball plates are designed into streamlined flat structure, while large-diameter ball plates are designed into double-plate truss structure. The squeezing is low, the water flow is smooth, and the valve flow resistance coefficient is only 0.1 to 0.6, which is much smaller than that of the check valves (1.7 to 2.6). The energy-saving effect is obvious.

This online-exclusive article was contributed by Jeremy Liang, marketing specialist at Adamant Valves. Visit: www.adamantvalves.com





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