D71X-N Manual Butterfly Valve

Productintroduction and characteristics
The butterfly valve should be used for open, close and regulating medium flow in pipeline of petroleum, chemical,food, medicine, metallurgy, ship, can also be used in a variety of corrosive medium, The following feature:
1. Excellent bidirectional sealing performance, Minimized operation torque.
2. Flow characteristics tend to be straight, good regulation performance.
3. Choosing different materials, can be used in corrosive medium.
4. Simple and compact structure, compact and light, easy to transport, install and
disassemble

Output Dimensions

Application Specification
DESIGNEDASSTANDARD:GB/T12238-2008;AWWAC504
FACETOFACEASSTANDRAD:GB/T12221-2005-J1;API609
FLANGEASSTANDARD:GB/T17241.6;DIN2632\2633;BS4504
JIS-B2220;ASME B16.5(CLASS150)
TESTASSTANDARD:GB/T13927-2008; BSEN12266-1 12266-2

Product design features
1. Seat and body are split design for easy maintenance and replacement.2. The valve body is designed to be open and the axial seal is safer. 3. It adopts an anti-exit structure for valve stem, spring +U type card structure are used in the upper part of the stem, which can not only compensate for installation errors, but also prevent the stem from loosening, 4. After machining of valve body, because of without lining rubber, to avoid the pressure deformation of the lining rubber. Which ensure the accuracy of body symmetry and reduce the torque of butterfly valve.