Honeywell VQ400 Series - Page 17

EN2R--9018 9704R1--NE
17
CONFIGURATIONS
Symbols and abbreviations
VPS
main valve V1 -- V2
internal by--pass/
high--low valve Vb
external pilot valve Vp
vent valve Vv
pressure switch
min or max
Valve Proving System
Inlet strainer
flange with pressure tap
Closed Position
Indication switch (CPI)
pressure tap
or
internal pilot valve Vp