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control valve in manual/auto mode huntting checked spring
tention also it is ok.positioner also good condition &
incoming inst air line also constant pr.kindly give us
correct answer?
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Answer Posted / abdul mannan
please check followings:
1-check gland packing if tight then may be loose.
2-If booster relay installed then check its equlizer valve
some time this valve called by-pass valve.The valve may
adjut to approprite position as hunting stop.
3-Check feed back linkage with touch any part of the body.
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