天津瑞蝶恒昌阀门有限公司

product introduction 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.flange installation is convenient, both vertical and

      horizontal installation can be adopted.

4.   can be used for emptying valve at pipe end

designed as standard : gb/t12238-2008；awwa c504

face to face as standrad :iso 5752-1982-13;?gb/t12221-2005-13

flange as standard : gb/t17241.6;din26322633;bs4504

            can be made：jis-b2220;asme_b16.5(class150)

test as standard :gb/t13927-2008; bs en 12266-1 12266-2

product design features

1.   there is half "o" ring on the contact between valve seat and valve shaft to achieve axial first seal

2.   valve stem and valve body are equipped with 4 oil proof bearings, which is beneficial to stem support.

   the upper shaft hole is equipped with two o rings and one special rectangular screw ring water seal,

   which makes the axial seal more reliable.

3. the two ends of the valve plate shaft hole design groove, effectively prevent damaging when valve

   shaft is loaded into the valve, thereby ensuring seal between the valve seat end face and valve plate

4. dn700( included) with supporting legs and hoisting hooks above for easy installation of valves in piping

5. after quenching and tempering process,the pin material of butterfly valve has high strength and high

   corrosion resistance, and the connection is more safe and stable.

6. a non-pin stem adopts an anti-exit structure, spring +u type card structure are used in the upper

  partof the stem, which can not only compensate for installation errors, but also prevent the stem

  from loosening.

7. high strength hollow plate for large caliber valves