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客戶提供的關于閥門安裝的說明,求大蝦幫忙翻譯解釋一下,謝謝
2 p( l; N; Y% a# WInstallation
7 c3 S% U" i' \ K( U' o3 J1 vDon`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange
" }/ T/ p. ?# p: p; s# ?4 {gasket between valve and flange during mounting.8 n3 K0 w+ y+ Q
• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
9 G T/ M4 r7 E$ X, lclosely in an existing pipe, they must be so spreaded by means of a special device that the valve can be( H- I+ w0 X2 M) {
easily installed with clearance .
# |& n, h# y3 l: |4 m: q. Z• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.
. v3 \ i. L8 W' F x0 F# T# m: YSpot weld the flanges to the pipe ., [" k) b0 [ M* K
• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve
& a6 m! F: Q- l6 G& sdisc can move freely within the connecting flanges .
- \. Z5 B0 C2 u$ d4 hAttention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and
5 S7 S6 e: U% h. x2 r( f& n9 Idestroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not% \6 Q1 y6 c& K: e( k
observed that the disc can move freely between the flanges. |
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