Page 86 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

70 Applied Process Design for Chemical and Petrochemical Plants

- mm nm-
-' '.) \/I-
-

GATE ....
VALVE .041--1��++--+-+-f:III.I"�
FLANGED . 0311--, � ....t..'-'f...&.,1 � !HP- � ""*"'I COUPLINGS
2 4 I 1 2) AND UNIONS 6 1 2 4
6 ....... . • .I. REDUCING BUSHING
-v ..
4 �1,a-,_ AND COUPLING
K �l-+-1-++ � �-++-+-H' - tti>·•. ��� �� V2 h = K V,/'·
:1
; +
2�W-'-l-i4+--i.:-���.,... � tWP_,-- 2g
SWING SCREWED
CHECK 1.1-�1-1--1-�..i...:!--'-+'1 USED AS REDUCER K = 0.05 - 2.0
.6
1
4
2
•'
VALVE SEE ALSO 1118-7
USED AS INCREASER LOSS IS UP
TO 40% MORE THAN THAT CAUSED
BY A SUDDEN ENLARGEMENT
...
FLANGED 11· � """""'"'2 ....... ""--!4i..&..!ei...6.1 � 0- .. o-t
2
-
SUDDEN ENLARGEMENT
2
h = (Vi - V > 2 FEET OF FLUID
2g
SEE ALSO EQUATION (5)
IF A2 = ac SO THAT V2 = 0
h = V 12 FEET OF FLUID
2 4 6 10 20 2g
D

h = K V 2 FEET OF FLUID
2g

Figure 2-128. Resistance coefficients for valves and fittings. Reprinted by permission, Hydraulic Institute, Engineering Data Book, tst Ed.,
1979, Cleveland, Ohio.