many advantages of globe valves
Very common use of Globe Valve, opening and closing torque, the structure length is longer, usually nominal diameter is limited to 250mm below, to 400mm, but the selection should be special attention to the import and export orientation. 15Omm below the globe valve media mostly flows from the bottom of the flap valve, globe valve above the 2O0mm media mostly flows from the top of the valve. This is due to take into account the closure of the valve torque. In order to reduce the open or close torque, globe valve general 2O0mm above are located bypass or outside the bypass valve.
The Globe Valve is the most obvious advantages are:
(l), due to the
friction between the valve and valve sealing surface is smaller than the gate in
the opening and closing process, and therefore wear.
(2) open the height is
generally only seat channel diameter of 1/4, and therefore much smaller than the
gate.
(3) on the valve body and disc are usually only one sealing surface,
and thus manufacturing processes, ease of maintenance. However, as of the
shortcomings of the valve can not be ignored.
Main disadvantage is the flow
resistance coefficient is relatively large, thus creating a pressure loss, in
particular, is this pressure loss is particularly evident in the hydraulic
unit.
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