Page 102 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

88 Applied Process Design for Chemical and Petrochemical Plants

i'ur VQIVCS: */o closed
Le
5,000
d

40

'Ball check valve, open
Swing check valve, open
*45O-Y Globe valve, open
I QOoclose screwed return
Screwed or fobricated tee
thru branch and
90Osingle- miter elbow
Welding tee thru branch
*Butterfly valve, open
Submerged discharge
'3-Way plug cock, st. thru, open / -
90" standard screwed or -
0
60"single-miter elbow a
0
U
4 5" I a le rat t h ru bronch
90"Iong-sweep or
30"double -miter elbow
'Plug cock, full port, open
Screwed or fabricated
tee or lateral thru run
submerged entrance
90" triple-miter or
45Osingle miter elbow
1 80°welding return or
45' screwed elbow
Welding tee thru run

No lte ' : d =Small Pipe, dia. inches
d'=Large Pipe,dia. inches
R 2 Bend Radius,inches
For Eccentric Reducers,
Increase Values of Concentric
Reducers by 33 1/3 yo.
Values for Tees and Laterals
Apply to Full Size Fittings,
Losses Larger for Side Outlets.
*Added by author 1-76
3-Way plug cock opening Is
80% of pipe size.
For partially closed globe-type valves,
For elbows 8 bends: R/d = 0 2 4 6 8 Multiply open Le by:
For contractions &
enlargemenls: d/d'= 0 42 0.4 0.6 0,8 3/4 open 3.25
1/2 open 12.0
1 /4 open 72.0
Figure 2-21. Equivalent length of fittings for pipe systems. Note: preferred use for 1% in. and larger pipe butt-welded or socket-welded con-
nections (this author). By permission, Tube Turns Div., Chemitron Corp. Bull. 7T 725, 1952, reference now to Tube Turns Technologies, Inc.