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客戶提供的關(guān)于閥門(mén)安裝的說(shuō)明,求大蝦幫忙翻譯解釋一下,謝謝
1 ]% p# s) S6 n8 q: _+ v bInstallation
( _& \( ?: Z, Y- H: V! ]Don`t use flange sealings. The seat ring of the Butterfly valves has a sealing lip which operates as flange
$ [3 ^0 D, ^/ A# H; Hgasket between valve and flange during mounting., C$ T* Q! V% a! I# q* X
• Insert the valve with the disc in the nearly closed position between the flanges. lf the flanges are located too
5 F4 a6 E8 Z) a( p5 ?1 wclosely in an existing pipe, they must be so spreaded by means of a special device that the valve can be2 X4 N7 p# ^/ N' x, q* t5 L
easily installed with clearance .
$ x+ N3 o+ T) g3 H• Mount the flange boIts and centre and align the valve between the flanges. Hand-screw the flange bolts.' f& _8 u/ W2 j' o
Spot weld the flanges to the pipe .* s9 h4 E7 b( M& p |: D2 o
• Before cross-tightening the flange bolts uniformly, it must be ensured by the test actuation that the valve; ~$ s @! J3 r$ ?$ R
disc can move freely within the connecting flanges .
* p1 Z7 I# {5 z- M$ f* L3 rAttention! In case of improper insertion of the disc between the flanges, the seat ring may be displaced and$ j/ r3 _* y' a. j4 m) |
destroyed during the first operations. Similarly, the sealing strip of the valve disc can be damaged if it is not! [- G: W2 ?4 b8 P
observed that the disc can move freely between the flanges. |
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