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 / aftab ahmed mazari
Please check following things:
1. To loose gland packing, due to tight packing, valve may hunt.
2.Check leakage from diaphragm.
3.May be seat or plug loose
4. Check cut marks at feed back linkages.
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