Advantages of a Pneumaict Butterfly Valve 1.Small in size and light in weight.Easy installation and mintenance.It can be mounted wherever needed. 2.Simple and compact construction,quick 90 degrees on-off operation. 3.Miniminzed operating torque,energy saving. 4.Flow curve tending to straight line.Excellent regulation performence. 5.Long service life.Standing the test of tens of thousands opening/closing operations. 6.Bubblew-tight sealing with no leakage under the pressure test. 7.Wide selection of materials,applicable for various medium. Technical data Meterial of main parts Part name Meterial Body,bonnet Cast iron, cast steel Spring Stainless steel Diaphragm Nylon reinforced rubber Valve disc Carbon steel,stainless steel,ect.   PN(MPa) Nominal pressure 1.0 1.6 (MPa)Strength test 2.4 Working temperature -15~+150℃ Suitable mediums Water,oil,e Products Detailes Process Application