Pneumatic ball valve and butterfly pneumatic valve contrast ( 2)

in the central heating pipe network commonly, above all. DN diameter below the pneumatic ball valve price better, DN diameter above butterfly pneumatic valve more outstanding cost performance. This is most of the design and selection of the user's experience for many years.
pneumatic ball valve sealing performance is superior to the control pneumatic valve, from the consideration on the sealing performance. Pneumatic ball valve is bi-directional zero leakage. Butterfly pneumatic valve is bi-directional ANSIV level standard ( No apparent leaks) So both are sufficient to meet the demand of heating pipe network, normal maintenance and repair of pipe network will not affect.
pneumatic ball valve is superior to the flow capacity of pneumatic valve adjustment, will tell from the flow capacity. For butterfly pneumatic valve in open position under the middle pneumatic valve plate and valve spindle occupies a local circulation channel, the smaller the diameter he take up the greater the proportion of circulation channel.
the following DN pneumatic ball valve pneumatic valve better, from the volume and weight also is convenient device of perspective. Above DN pneumatic butterfly valve pneumatic valve lighter volume.
because butterfly pneumatic valve as triple eccentric metal sealing butterfly valve, operating torque. So the adjustment of the pneumatic valve opening and closing torque is very small, and the pneumatic ball valve sealing surface with the increase of diameter of contact area with the increase of times square, large diameter ball pneumatic valve open and close at moment will be very big.
because sealing materials and structure of the pneumatic ball valve is not suitable for steam medium, will tell from the use of temperature. Pneumatic valve can be used to control the conventional heating with saturated steam medium ( Degrees)
due to the structure of the pneumatic valve, from the Angle of pipe stress under. Butterfly pneumatic valve can withstand stress is higher.
pneumatic ball valve and butterfly pneumatic valve can achieve long life ( Normal use years) But the pneumatic ball valve sealing structure of non-metallic play an important role, from the service life. Pneumatic valve for the adjustment of pure metal to metal seal, so usually last longer butterfly of pneumatic valve.
DN) CAL pneumatic ball valve under the price will be better, from the Angle of the price. DN above diameter butterfly pneumatic valve price will have more advantages.