QT Series Parts Manual

QT-5 Industrial Quincy Compressor
2022207701, June 2018 10
PILOT VALVES
See Part # below to 20239116xx (per pressure setting) to obtain
correct pilot valve.
See Part # below to 20239121xx
(per pressure setting) to obtain correct pilot valve.
20239116xx Series Pilot Valve (continuous run operation)
20239121xx Series Pilot Valve (dual control operation)
Item Part
# Qty. Number Description
1 2 screen
2 1 filter
3 1 "o"ring
4 1 see chart below pilot valve spring
5 1 ball
Can be used to repair 20239116xx series pilot valves only. Cus-
tomer must specify which spring when ordering kit.
Pilot Valve Repair Kit 2023911651
Unload Min. Dif. Max. Dif.
(PSI) (PSI) (PSI)
40 2 5
60 3 10
100 4 20
150 5 30
175 5 45
Applies to 20239121xx series pilot valves only.
Di󰀨erential Setting Chart
Part # Load PSI Unload PSI
2023911608 90 100
2023911616 * 30-70 adjustable
2023911617 * 71-150 adjustable
2023911618 * 151-175 adjustable
* Customer to set, see differential setting chart. Additional fac-
tory preset valves are available upon request.
Part # Load PSI Unload PSI
2023912107 100 115
2023912108 125 140
2023912111 150 165
Spring Part # Unload Min. Dif. Max. Dif.
(item 4) (PSI) (PSI) (PSI)
Di󰀨erential Setting Chart
2023911652 (red) 30 2 4
" 40 5 8
" 50 5 8
" 60 5 8
" 70 5 10
2023911653 (yellow) 80 5 10
" 90 5 12
" 100 5 13
" 110 5 15
" 120 5 15
" 130 5 18
" 140 5 18
" 150 5 20
2023911654 (green) 160 5 15
" 170 5 20
" 175 5 23
Not all pilots are for use with all compressor systems. Make
sure that the pilot you order is set within the safe operating
limits of your compressor. Failure to heed this warning could
result in an explosion.
WARNING !