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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. {4 \6 w9 m1 E2 F
Installation
: ~2 j$ u1 W/ o& ], q; I; H cDon`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange
0 J; J6 F6 G, w8 W2 x4 x& m* I9 s4 vgasket between valve and flange during mounting.; |0 ~% m* I5 `6 t, y6 Y- I7 `
• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
2 P! f1 H' p# }+ _# b+ {- s6 ^! Aclosely in an existing pipe, they must be so spreaded by means of a special device that the valve can be
3 Q/ }! \6 u6 ?: t2 S( M6 measily installed with clearance .& C' k& W5 x: o7 Y
• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.3 H2 O0 w& M+ \
Spot weld the flanges to the pipe .
2 A* y" a5 t O3 m; [• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve
2 j/ X5 H r8 j, u+ {$ Zdisc can move freely within the connecting flanges .2 }# j; H6 C" ^
Attention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and/ j D) n0 `% u6 Y7 Q/ Y9 R
destroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not
* Y3 l0 N5 C% z/ B$ U( uobserved that the disc can move freely between the flanges. |
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