Spirax Sarco DP27, Installation And Maintenance Instructions Manual

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IM-P470-03 CH Issue 7
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31. Replace the diaphragm plate and pushrod assembly and loosely fit the lower diaphragm
chamber on two bolts either side of the union connection to locate the spigot in the recess.
32. Bring the two new diaphragms together (where precoated sealant is applied this should
face outwards) and slide into position.
If the diaphragms are not renewed, but cleaned only, care must be taken to replace the
diaphragms in their original order.
33.
Push the lower diaphragm chamber home to locate in the recess and refit the M12 nuts
and bolts. Progressively and evenly tighten to a torque of 80 - 100 N m.
34. Retighten the long union nut to ensure a steam tight seal.
Bring the valve back into commission, following as many Steps as necessary in Section 4,
page 16.
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