Valve Selection And Sizing - Honeywell AUTOMATIC CONTROL SI Edition Engineering Manual

Valve Selection and Sizing

Intr oduction
Valve Selection
Valve Sizing
ENGINEERING MANUAL OF AUTOMATIC CONTROL
ENGINEERING MANUAL OF AUTOMATIC CONTROL
............................................................................................................ 428
Definitions ............................................................................................................ 428
Valve Components .............................................................................. 428
Valve Flow Characteristics .................................................................. 428
Valve Flow Terms ................................................................................ 429
Valve Ratings ...................................................................................... 429
Valve Types .......................................................................................... 430
Valve Material and Media .................................................................... 431
............................................................................................................ 432
Globe Valve ......................................................................................... 433
Ball Valve ............................................................................................. 433
Butterfly Valve ...................................................................................... 433
Two-Way Valve .................................................................................... 434
Quick-Opening Valve ....................................................................... 434
Linear Valve ..................................................................................... 434
Equal Percentage Valve .................................................................. 435
Three-Way Valves................................................................................ 436
Mixing Valve .................................................................................... 436
Diverting Valve ................................................................................ 436
............................................................................................................ 437
Water Valves ........................................................................................ 437
Quantity of Water ............................................................................ 438
Water Valve Pressure Drop ............................................................. 438
Water Valve Sizing Examples ......................................................... 439
Steam Valves ....................................................................................... 441
Quantity of Steam ........................................................................... 442
Steam Valve Pressure Drop ............................................................ 442
Proportional Applications ............................................................ 442
Two-Position Applications ........................................................... 442
Steam Valve Sizing Examples ......................................................... 443
VALVE SELECTION AND SIZING
427
CONTENTS