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Anderson Greenwood SerieS 9300 Pilot oPerated Safety relief ValVeS
InstallatIon and MaIntenance InstructIons
Supply pressure gauge
Supply
pressure
Supply vacuum gauge
Supply vacuum
fiGUre 14
Set pressure adjustment
½" Pipe (min)
Vent
accumulator .25 ft
[.007 m
]
3
3
Supply port (½" NPt)
Positive pressure pilot
Vacuum set adjustment
⅜" Pipe (min)
Vent
accumulator .25 ft
[.007 m
]
3
3
Supply port (⅜" NPt)
negative pressure pilot
test pilot
reseat pressure adjustment
dome pressure gauge
test pilot
reseat vacuum
adjustment on back side
dome vacuum gauge
25
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