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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- H2 r; @: L' M& n: i
Installation
" Q- g' |3 o) I0 T F* ?Don`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange% }& |- O+ L6 m
gasket between valve and flange during mounting.* b; ]8 c- H }6 M8 E
• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
$ }* _0 {$ Z; g+ Q. }( y+ a Fclosely in an existing pipe, they must be so spreaded by means of a special device that the valve can be$ g! T0 H) B r3 K3 e' Q
easily installed with clearance .
( B- S- c" Q" U- z6 h• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.
7 j6 P! t2 p# k# L# C$ h9 KSpot weld the flanges to the pipe .
; F. x+ P, I( b/ Q• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve5 T" I" ^) V+ C4 v
disc can move freely within the connecting flanges .
* }& E" n& t2 J. P3 uAttention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and @+ q( ^0 I" t g7 D/ r
destroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not1 L) C/ ^- y7 M2 a3 o
observed that the disc can move freely between the flanges. |
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发表于 2009-3-2 14:44:55
