UD series double flanged butterfly valve ductile iron body DI+Nylon coating disc SS420 stem EPDM seat made in China

Well-run products, skilled income group, and better after-sales products and services; We have been also a unified massive family, all people stick with the business price “unification, dedication, tolerance” for China Manufacturer for Hot Sale High Quality China Mnufacturer Butterfly Valve, You would not have any communication problem with us. We sincerely welcome clients all over the world to get hold of us for organization cooperation.
Well-run products, skilled income group, and better after-sales products and services; We have been also a unified massive family, all people stick with the business price “unification, dedication, tolerance” for Butterfly Valve, China Valve, We have now advanced production technology, and pursuit innovative in products. At the same time, the good service has enhanced the good reputation. We believe that as long as you understand our product, you have to be willing to become partners with us. Looking forward to your inquiry.

UD Series soft sleeve seated butterfly valve is Wafer pattern with flanges ,the face to face is EN558-1 20 series as wafer type.

Characteristics:

1.Correcting holes are made on flange according to standard, easy correcting during the installation.
2.Through-out bolt or one-side bolt used. Easy replacing and maintenance.
3.The soft sleeve seat can isolate the body from media.

Product operation instruction

1. Pipe flange standards should conform to butterfly valve standards; suggest using welding neck flange, specialized flange for butterfly valves or integral pipe flange; do not use slip-on welding flange, supplier must agreed before user can uses slip-on welding flange.
2. The use of pre-installation conditions should be checked whether the use of butterfly valves with the same performance.
3. Before the installation user should clean the sealing surface of valve cavity, make sure no dirt attached; simultaneously clean the pipe for welding slag and other debris.
4．When installing, the disc must be in closed position to ensure that the disc do not collide with the pipe flange.
5. Both valve seat ends act as flange seal, extra seal is not needed when installing the butterfly valve.
6. The butterfly valve can be installed at any position (vertical, horizontal or tilt). Butterfly valve with big size operator may need bracket.
7. Collide when transporting or storing the butterfly valve may cause butterfly valve reduce its sealing ability. Avoid butterfly valve disc from bumping to hard objects and it should be open at 4 ° to 5 ° angle position in order to maintain sealing surface from damaging during this period.
8. Confirm correctness of flange welding before installation, welding after installation of the butterfly valve may cause damage to the rubber and preservation coating.
9. When using butterfly valve operated by pneumatic, the air source should maintain dry and clean to avoid foreign bodies from entering pneumatic operator and affect working performance.
10. Without special requirements noted in purchasing order of the butterfly valve can only be mounted vertically and for interior use only.
11. Case of disorder, reasons should be identified, troubleshooted, should not knock, hit, prize or lengthen the lever operator by arm of force to forcibly open or close the butterfly valve.
12. During the storage and unused period, the butterfly valves should kept dry, sheltered in shade and avoid harmful substances surrounding from erosion.

Dimensions:

Well-run products, skilled income group, and better after-sales products and services; We have been also a unified massive family, all people stick with the business price “unification, dedication, tolerance” for China Manufacturer for Hot Sale High Quality China Mnufacturer Butterfly Valve, You would not have any communication problem with us. We sincerely welcome clients all over the world to get hold of us for organization cooperation.
China Manufacturer for China Valve, Butterfly Valve, We have now advanced production technology, and pursuit innovative in products. At the same time, the good service has enhanced the good reputation. We believe that as long as you understand our product, you have to be willing to become partners with us. Looking forward to your inquiry.