The role of the pneumatic valve hydraulic balance

hydraulically balanced pneumatic valve is used to control the flow of oil in the hydraulic system of direction or adjust the pressure and flow rate, so it can be divided into the direction of balanced pneumatic valve, pneumatic valve and flow pressure balance balance three types of pneumatic valve. A pneumatic valve of the same shape, because of different mechanism of action, and have different functions. Pneumatic pressure balance valve and flow cross section flow balanced pneumatic valve using throttle control pressure and flow of the system, and the direction of balanced pneumatic valve with general circulation change controls the oil flow direction. That is to say, although the hydraulic balance all sorts of different types of pneumatic valve, they still kept some basic common point between. For example:
( ） In structure, all of the pneumatic valve with pneumatic valve, pneumatic valve core ( Pneumatic valve or slippery pneumatic valve) Yuan and driven by pneumatic valve core movement, parts ( Such as spring, electromagnet)
( ） All on the working principle, pneumatic valve opening size, pneumatic valve pressure difference between inlet and outlet through the pneumatic valve and the relationship between the flow meet the orifice flow formula, is only part of the all kinds of pneumatic valve control parameters of each are not identical.