Product Description
Butterfly valve
Design standard: EN593
Face to face :DIN3202/BS5155
Body:GGG50 with internal and external epoxy resin coating
Disc:SS304
Stem:2Cr13/SS304/SS316
Sealing :EPDM
Size:DN1100\DN1300\DN1500
Flange double-essentric soft-sealed butterfly valve is operated by worm gear to decelerate to drive the disc to rotate within 90°.It can be
applied to cut off or regulate the flow of media. The valve can be actuated by operating lever,handle wheel,electric actuator or pneumatic
actuator .Underground valve can be operated by an extended spindle . No matter operated by electric actuator or pneumatic one,positions
where the valve is opened and closed are all equipped with limit switches and indicating devices that synchronically show the opening state of the disc.
Being double essentric, when opened, the sealed ring of the disc is automatically off-seated after only a little degree of opening movement.
The sealed ring completely bears no external pressure,which helps the valve keep longer life.
The bevelled-sealed surface of the body forms a linear seal with the rubber-sealed surface,the sealbility is credible.The position of sealed
ring can be adjusted in all directions to modulate the compression of the seal,which makes the valve able to be operated by minimun torque.
The disc applies the flying-disc design with a result of light weight,high rigidity,powerful stergth,small flowresistance and low loss of pressure.
The stem and disc use a positioning pattern of non-penetration and pinoffset to avoid shearing and abrasion of the spline caused by frequent
shifting of the upper stem and to prevent abnormal opening and closing of the valve.
Automatic assembly and coating product line and developed process-flow ensure the outstanding ability of anti-corrosion and flawless
appearances of products.
The sealed surface of the base uses supersonic adhesive technology and is coated by stainless steel containing high nickel
whose adhesive strength can reach to 50Mpa.
Indide and outside surfaces of the body are coated with electrostatic epoxy resin powder .The coating is even and firm with good
adhesion and excellent anti-corrosion.
Non-toxic epoxy resin powder used comply with sanitary standard GB/T 17219-1998.
The coated resin is in accordance with standards of drinking water.
The valve can be used in drinking water system ,water supply and drainage ,heat supply,gas,metallurgical industry,energy system
and pineline and so on.
Detailed Photos
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