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客户提供的关于阀门安装的说明,求大虾帮忙翻译解释一下,谢谢
3 h" u, D& k+ M/ vInstallation" H; |9 [6 X- M
Don`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange7 ~: C9 X0 T" ^
gasket between valve and flange during mounting.* ^* A2 Q. N1 _3 G1 l1 e
• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
4 i4 R% ?5 _: W5 ^6 pclosely in an existing pipe, they must be so spreaded by means of a special device that the valve can be1 M$ J9 h, u; J3 t
easily installed with clearance .% j \2 `' E5 X* f4 Y! t
• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.& z) k% k! V: C3 A1 R) y7 J5 w( O
Spot weld the flanges to the pipe .# d5 e/ o2 Z2 F! a: @
• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve
1 u/ r: Y4 a/ _4 | M" @disc can move freely within the connecting flanges .
( Z# h8 t3 O6 z- @" i0 LAttention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and
: g% r9 v5 [& N7 q& E7 edestroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not8 P! V! j- u: n
observed that the disc can move freely between the flanges. |
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