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PART D - PROVING REQUIRED WATER FLOW
PUMP:
D.2 Water Flow Rate ________ US GPM
D.3 Max. Head Press. at Water Flow ________ ft of head
(from specs)
D.4 Pressure Drop of Water Coil ________ ft of head
D.5 Available Head Press. ________ ft of head
(D.3 - D.4)
D.6 Total Effective Length ________ eff. ft
(from D.1)
D.7 Head Loss /100 ft ________ per 100 ft
(D.5 x 100
÷ D.6)
D.8 Pipe Diameter ________ in.
(Table D 2)
D.1 Effective Length Calculation
Fitting # EL Total EL
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
________________ _________ x ________ = ___________
Measured (Actual) Length ___________
Total Effective Length ___________
TABLE D 1 EQUIVALENT LENGTHS FOR COPPER PIPE FITTINGS (straight pipe in feet)
FITTING EQUIVALENT FITTING EQUIVALENT
LENGTH LENGTH
Gate / Ball Valve (open) 1 long sweep 90
o
elbow 2
Globe Valve (open) 23 45
o
elbow 1
Angle Valve (open) 12 180
o
close return 6
Check Valve (open) 6 standard tee (straight through) 2
Balance Valve 18 standard tee (90
o
turn) 5
Standard Elbow 3 contraction or enlargement 2
TABLE D 2 HEAD LOSS PER 100 FEET OF EQUIVALENT LENGTH
FLOW HEAD LOSS HEAD LOSS HEAD LOSS HEAD LOSS
(US GPM) (FT./100FT) (FT./100FT) (FT./100FT) (FT./100FT.)
1 3 2 1 *
1.5 6 4 1 *
2972*
2.5 14 9 3 *
3 19 13 4 1
3.5 25 17 5 1
4 32 22 6 1
4.5 39 27 7 2
5 * 33 9 2
6 * 45 12 3
7 * * 16 4
8 * * 21 5
9 * * 26 6
10 * * 31 8
1/2" inside diameter 5/8" inside diameter 3/4" inside diameter 1" inside diameter
5