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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) e- [7 O0 n' Z* f# H. W
Installation
; w" d# D1 v. r8 Q$ }8 ]Don`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange
, J5 x# I+ w$ U: C" n; dgasket between valve and flange during mounting.
. `( L: I$ B, Q, d• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
[- Q) {" K( W7 ]! o3 ]closely in an existing pipe, they must be so spreaded by means of a special device that the valve can be
7 |( u+ ?- g0 K8 Y# Y: [easily installed with clearance .
7 p; \8 f: C4 [1 I% g• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.& M4 ^( Y9 \; m; ]5 u
Spot weld the flanges to the pipe .
6 s( k w; `+ N+ n! a" F5 Z• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve
) l* C; u5 H- Xdisc can move freely within the connecting flanges .' P7 T5 Z! P5 h8 v9 A% g+ \ f
Attention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and
2 u) |9 L- C! q5 Z/ r6 {4 Ndestroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not' P4 i; |: }; Z0 k& M, }
observed that the disc can move freely between the flanges. |
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