Flowserve 51 Series Flanged Ball Valves - Manual (Page 5)

Flow Control Division
Worcester Controls
WCAIM2014 Z|x" - 2" 51/52 One-piece, Flanged Ball Valves 5
New Style 51/52 Valve Stem Builds
Automated Valve Shown
PT Series Valves with
High-Per Fill “X” Seats
Automated Valve Shown
V17 Option — Automated Valve Shown Fire Valve — Automated Valve Shown
The above stem builds are for all 51/52 series new style valves — Except for those shown below
All Other Valves with
High-Per Fill “X” Seats
Automated Valve Shown
Manual Valve Shown
NOTE: Manual valve stem build components such as stem seal(s), thrust bearings and seal protector are the same as automated valves. For
colors of various stem components, see color chart on page 6. For fire valves and valves with V17 option used in oxygen service, use Polyfill
stem seal and thrust bearing protectors in place of PEEK material.