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Design of Flow Systems 453

SWIflQ CnACK VflVt) Globe valve
Screwed Screwed 20i. • . . ..~
6 \" \ M
^
" . >
4 , __
K »l : |j III ^ 10 > N
2 . -s.^ ^* -,,.
6 0 . 6 1 2 4
1 ——— 4 -HHI 0 3 D
0.3 0.6 1 2
D lo
3 •s,
10
K 2 K
6 """S "
Flanged 1 Ranged 4
2 4 6 10 20 1 2 4 6 20
D D
Angle valve Gate valve
Screwed Screwed
0.3 ^ ^
^ -
B | 0.2 1 >».
^s
4 •x,
2S «s
0.1
2 ^ s 0. 3 0 . 6 D 1 2 4
1 L w
0 3 0.6 1 2 4 ». •• ^
D "**fl s ;- ^..
*s K ft1
K 3 ^ 0.06 v
2 0.04
Flanged,. 5 ^
0 03
1 2 4 6 10 20 F..VK. - 2 4 6 10 20
D 0

Valve Tvoe — K
Disk Check 10.0
Ball Check 70.0
Foot 15.0

Figure 8.19 Friction-loss factors for valves. From Ref. 19 with permis-
sion.

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