cast iron butterfly valve

Supplier of "HITACHI", Top 20 Global corporations of Japan,Signed Contract prove our quolity Performance: cast iron butterfly valve cast iron butterfly valve 1.Normal diameter:DN40 1000 2.Nominal pressure:PN10/16 3.Working temperature:-15`150 4.Suitable mediums:fresh water,sea water,air,steam,food,medicine,oils,sewage,etc Materials of main parts: 1.Body:cast iron,ductile iron,aluminum bronze,ss304,316,and carbon steel. 3.Stem/Shaft:stainless steel and carbon steel 4.Rubber gasket:NR,EPDM,NBR,VITON,PTFE,Hypalon 5.Bushing:lubrized bronze,PTFE,GS-1 Transmission:worm gear,pnuematic,hydraulic,hydraulic-pneumatic and electric The main characteristics: 1.Small in size and light in weight,wasy installation and maintenance,it can be mounted wherever needed 2.Simple and compact construction,quick 90 degree on-off operation 3.Minimized operating torque,energy saving 4.Flow cure tending to straight line,Excellent regulation performance 5.Long service life.Standing the test of tens of thousands opening/closing operations 6.Bubbles-tight sealing with no leakage under the pressure test 7.Wide selections of materials,applicable for various medium 8.Stem and disc are connected by means of pinless structure with more reliable performance 9.Disc seat and body of non backed slim-disc butterfly valve are connected by frameless structure to overcome leakage on the connectiing position of flange sealing surface