CALCULATION OF BOWL HEAD OR DISCHARGE HEAD For vertical turbine pumps, discharge head equals bowl head minus lift and internal pump loss. It can be shown as: h D = h B - h L - h P Where h D = Discharge head. Pressure gauge reading in PSI multiplied by 2.31 for fresh cool water. h B = Bowl head. Actual head in feet developed by the bowl assembly. h L = Lift. Elevation difference in feet between the pumping water level and the pressure gauge. h P = Internal pump loss. Pump column loss plus discharge head loss in feet. Conversely, bowl head equals discharge head plus lift and internal pump loss. h B = h D + h L + h P NOTES: 1. Test curves are plotted as bowl head (h B ). Allowances must be made for lift and internal pump loss when comparing test curves to field performances. FIRE PUMP SYSTEMS General Information and Engineering Data Vertical Turbine Fire Pump AC Fire Pump Systems FP 2.4 February, 1996 Supersedes 5/95 issue hD (Discharge Head) Pressure Gauge hL (LIFT) hp (Internal Pump Loss) Setting Sump Depth hB (Bowl Head) Pumping Water Level Pump O.A.L.
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CALCULATION OF BOWL HEAD OR DISCHARGE HEAD
For vertical turbine pumps, discharge head equals bowlhead minus lift and internal pump loss. It can be shown as:
hD = hB - hL - hP
Where hD = Discharge head. Pressure gauge reading inPSI multiplied by 2.31 for fresh cool water.
hB = Bowl head. Actual head in feet developed by the bowl assembly.
hL = Lift. Elevation difference in feet between the pumpingwater level and the pressure gauge.
hP = Internal pump loss. Pump column loss plus discharge head loss in feet.
Conversely, bowl head equals discharge head pluslift and internal pump loss.
hB = hD + hL + hP
NOTES:1. Test curves are plotted as bowl head (hB).
Allowances must be made for lift and internalpump loss when comparing test curves to fieldperformances.
FIRE PUMP SYSTEMSGeneral Information and
Engineering DataVertical Turbine Fire Pump
AC Fire Pump Systems
FP 2.4
February, 1996Supersedes 5/95 issue
hD (Discharge Head)
Pressure Gauge
hL(LIFT)
hp (Internal Pump Loss) Setting
Sump Depth hB (Bowl Head)
Pumping Water LevelPumpO.A.L.
Shaft O.D.Minimum 1.00 1.00 1.00 1.00 1.00
Maximum 1.00 1.00 1.00 1.19 1.19
Packing: No. Rings/Size Square 5/.38 5/.38 5/.38 5/.38 5/.38
051-17652-131031-45602-041931-94ISP
CHC11CLC11CLC11CLAW01CLAW01eziS pmuP
057005005052052etaR wolF lavorppA
521052521052521gnitaR egnalF egrahcsiD
norI tsaCnorI tsaCnorI tsaCnorI tsaCnorI tsaClairetaM daeH
Max Working Pressure (PSIG) 175 psi 400 psi 175 psi 400 psi 175 psi
Minimum Submergence Above Bell 17.3 17.3 23.0 23.0 29.0
DISCHARGE HEADDESIGN DATA
No. of Vanes 5 5 5 5 8
06.5106.5106.5106.806.8aerA telnI
31.736.636.613.713.7retemaiD mumixaM
31.831.831.805.605.6retemaiD muminiM
86.086.086.054.054.0erehpS mumixaM
WR2 for Max. Dia. (Lbs-Ft2) Per Stage 0.58 0.58 0.89 0.89 0.89
Wear Ring Clearance-Diametral .015 in. ±.001 .015 in. ±.001 .016 in. ±.002 .016 in. ±.002 .016 in. ±.002
5/39/55/39/77/3xaM/niM segatS fo .oN
IMPELLER DESIGN DATA
96.196.196.105.105.1)lwoB( retemaiD tfahS
Maximum Shaft Span (Brg. to Brg.) 120 120 120 120 120
SHAFT AND BEARING DATA
STUFFING BOX DATA
All dimensions are in inches
FIRE PUMP SYSTEMSGeneral Information and
Engineering DataVertical Turbine Fire Pump
FP 2.4Page 2
August 2002
AC Fire Pump Systems
592-641541-05253-141041-58323-151ISP
CHJR41CHJR41CHC21CHC21CHC11eziS pmuP
0051005100010001057etaR wolF lavorppA
052521052521052gnitaR egnalF egrahcsiD
norI tsaCnorI tsaCnorI tsaCnorI tsaCnorI tsaClairetaM daeH
Max Working Pressure (PSIG) 400 psi 175 psi 400 psi 175 psi 400 psi
Minimum Submergence Above Bell 29.0 34.0 34.0 42.0 42.0
DISCHARGE HEADDESIGN DATA
No. of Vanes 8 8 8 8 8
42.0342.0334.0234.0206.51aerA telnI
57.757.757.757.731.7retemaiD mumixaM
28.928.996.896.831.8retemaiD muminiM
89.089.037.037.086.0erehpS mumixaM
WR2 for Max. Dia. (Lbs-Ft2) Per Stage 0.89 1.65 1.65 3.12 3.12
Wear Ring Clearance-Diametral .016 in. ± .002 .016 in. ± .002 .016 in. ± .002 .016 in. ± .002 .016 in. ± .002
7/44/201/55/301/5xaM/niM segatS fo .oN
IMPELLER DESIGN DATA
49.149.196.196.196.1)lwoB( retemaiD tfahS
Maximum Shaft Span (Brg. to Brg.) 120 120 120 120 120
SHAFT AND BEARING DATA
Shaft O.D.Minimum 1.19 1.19 1.19 1.19 1.50
Maximum 1.50 1.19 1.50 1.50 1.93
Packing: No. Rings/Size Square 5/.38 5/.38 5/.38 5/.38 5/.38
STUFFING BOX DATA
All dimensions are in inches
FIRE PUMP SYSTEMSGeneral Information and
Engineering DataVertical Turbine Fire Pump
AC Fire Pump SystemsFP 2.4
Page 3
August 2002
741-101681-641541-77752-631531-55ISP
CMD81CMD61CMD61CHHR41CHHR41eziS pmuP
00030052005200020002etaR wolF lavorppA
521052521052521gnitaR egnalF egrahcsiD
norI tsaCnorI tsaCnorI tsaCnorI tsaCnorI tsaClairetaM daeH
Max Working Pressure (PSIG) 175 psi 400 psi 175 psi 400 psi 175 psi
Minimum Submergence Above Bell 50.0 50.0 50.0 50.0 87.0
DISCHARGE HEADDESIGN DATA
No. of Vanes 7 7 7 7 7
00.9473.0473.0460.6360.63aerA telnI
36.0113.913.900.800.8retemaiD mumixaM
57.2136.1136.1188.988.9retemaiD muminiM
57.027.027.081.181.1erehpS mumixaM
WR2 for Max. Dia. (Lbs-Ft2) Per Stage 5.05 5.05 9.65 9.65 13.3
Wear Ring Clearance-Diametral .016 in. ± .002 .016 in. ± .002 .020 in. ± .002 .020 in. ± .002 .020 in. ± .002
2/23/33/26/44/2xaM/niM segatS fo .oN
IMPELLER DESIGN DATA
96.244.244.291.291.2)lwoB( retemaiD tfahS
Maximum Shaft Span (Brg. to Brg.) 120 120 120 120 120
SHAFT AND BEARING DATA
Shaft O.D.Minimum 1.18 1.50 1.50 1.68 1.68
Maximum 1.50 1.93 1.68 1.68 1.93
Packing: No. Rings/Size Square 5/.38 5/.38 5/.38 5/.38 5/.38
STUFFING BOX DATA
All dimensions are in inches
FIRE PUMP SYSTEMSGeneral Information and
Engineering DataVertical Turbine Fire Pump
FP 2.4Page 4
August 2002
AC Fire Pump Systems
621-55921-65141-501141-49ISP
CHE02CHE02CHD81CMD81eziS pmuP
0005005400040053etaR wolF lavorppA
051051521521gnitaR egnalF egrahcsiD
leetS .baFleetS .baFnorI tsaCnorI tsaClairetaM daeH
Max Working Pressure (PSIG) 175 psi 175 psi 285 psi 285 psi
Minimum Submergence Above Bell 87.0 221.0 71.0 71.0
DISCHARGE HEADDESIGN DATA
No. of Vanes 7 7 6 6
07.0807.0800.9400.94aerA telnI
26.1126.1136.0136.01retemaiD mumixaM
13.3113.3196.2157.21retemaiD muminiM
57.157.157.057.0erehpS mumixaM
WR2 for Max. Dia. (Lbs-Ft2) Per Stage 13.3 13.3 17.16 17.16
Wear Ring Clearance-Diametral .020 in. ± .002 .020 in. ± .002 .021 in. ± .003 .021 in. ± .003
2/12/12/22/2xaM/niM segatS fo .oN
IMPELLER DESIGN DATA
44.244.296.296.2)lwoB( retemaiD tfahS
Maximum Shaft Span (Brg. to Brg.) 120 120 120 120
SHAFT AND BEARING DATA
Shaft O.D.Minimum 1.68 1.68 1.68 1.68
Maximum 1.93 1.93 1.93 1.93
Packing: No. Rings/Size Square 5/.38 5/.38 5/.38 5/.38
STUFFING BOX DATA
All dimensions are in inches
FIRE PUMP SYSTEMSGeneral Information and
Engineering DataVertical Turbine Fire Pump
AC Fire Pump SystemsFP 2.4
Page 5
August 2002
Material MaterialItem Description Code Description608 Headshaft 2227 SST 416604 Adjusting Nut 2130 Brass
leetS2422yeKBIG037rbS rebbuR1215regnilS226
618 Stuffing Box Split Gland 1193 Aluminum Bronze600 Discharge Head 1003 Cast Iron616 Stuffing Box 1003 Cast Iron617 Stuffing Box Bearing 1109 Bronze735 Stuffing Box Stud Nut 2229 SST 316739 Stuffing Box Stud 2229 SST 316779 Stuffing Box Gasket 5136 Rubber Sbr
sotsebsA-noN nobraC6205gnikcaP026621 Lantern Ring 6359 Teflon (PTFE)637 Hanger Flange 1003 Cast Iron
Discharge Head Assembly
Material MaterialItem Description Code Description660 Bowl Shaft 2227 SST 416661 Discharge Bowl 1003 Cast Iron791 Discharge Bearing 1109 Bronze670 Intermediate Bowl 6911 Coated Cast Iron672 Inter Bowl Bearing 1109 Bronze
eznorB2011rellepmI376677 Impeller Taper Lock 2242 Steel680 Wear Rings 1117 Aluminum Bronze
8 edarG8922tloB xeH067692 Sand Collar 1109 Bronze688 Suction Bell 1003 Cast Iron690 Suction Bearing 1109 Bronze698 Suction Strainer 1102 Bronze
rbN rebbuR2035gniR-O347norI laM6401gulP747
Bowl Assembly
Material MaterialItem Description Code Description642 Column Pipe 6501 Black Pipe645 Column Coupling 6501 Black Pipe
614 TSS7222tfahseniL646656 Lineshaft Bearing 5121 Rubber Sbr649 Lineshaft Coupling 2265 SST 416652 Bearing Retainer 1102 Bronze
Column & Lineshaft Assembly
FIRE PUMP SYSTEMSLineshaft Turbine – Water Lube –Cast Head – Threaded Column –
Motor/Gear Driver VHS
FP 2.4Page 6
August 2002
AC Fire Pump Systems
Material MaterialItem Description Code Description608 Headshaft 2227 SST 416604 Adjusting Nut 2130 Brass
leetS2422yeKBIG037rbS rebbuR1215regnilS226
618 Stuffing Box Split Gland 1193 Aluminum Bronze600 Discharge Head 9645 Fab Steel616 Stuffing Box 1003 Cast Iron617 Stuffing Box Bearing 1109 Bronze739 Stuffing Box Stud 2229 SST 316735 Stuffing Box Stud Nut 2229 SST 316779 Stuffing Box Gasket 5136 Rubber Sbr
sotsebsA-noN nobraC6205gnikcaP026621 Lantern Ring 6359 Teflon (PTFE)
Discharge Head Assembly
Material MaterialItem Description Code Description660 Bowl Shaft 2227 SST 416670 Intermediate Bowl 5853 Coated Cast Iron672 Inter Bowl Bearing 1109 Bronze673 Keyed Impeller 1102 Bronze680 Wear Ring 1117 Aluminum Bronze
8 edarG8922tloB xeH067692 Sand Collar 1109 Bronze688 Suction Bell 1003 Cast Iron690 Suction Bearing 1109 Bronze698 Suction Strainer 1102 Bronze725 Thrust Ring 2217 SST 316
rbN rebbuR2035gniR-O347norI laM6401gulP747
Bowl Assembly
Material MaterialItem Description Code Description642 Column Pipe 9645 Fab Steel Pipe
614 TSS7222tfahseniL646656 Lineshaft Bearing 6108 Steel/Rubber Sbr649 Lineshaft Coupling 2265 SST 416
Column & Lineshaft Assembly
FIRE PUMP SYSTEMSLineshaft Turbine – Water Lube –
Fab Head – Flanged Column –Motor/Gear Driver VHS
AC Fire Pump SystemsFP 2.4
Page 7
August 2002
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