5
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.0522/629371 - 629923 Fax 0522/628980
E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3.1 Technical features of the B Series lobe positive displacement pump
The table below shows the nominal features of the various dimensions of the B series lobe displacement pump, inserted in the LDPU. The data that make
up the table refer to the pump model, the capacity that each pump model (B100, B105, B110...) elaborates every 100 revolutions, the maximum operation
speed of each pump size, the differential operating pressure, expressed in bar, and the standard dimensions of the opening couplings, expressed in
millimetres and inches.
PUMP
MODEL
THEORETIC
CAPACITY
MAXIMUM
SPEED
MAXIMUM
POWER
MAXIMUM OPERATING PRESURE (bar) STANDARD
CONNECTION
lt/100 rpm rpm kW rotor clearances ST (standard)
with shafts
rotor clearances SM (increased)
with shafts
High pressure
Duplex + Acteon
S.S. AISI 316 L DUPLEX S.S. AISI 316 L DUPLEX DN Inches
B100 3 1400 1.5 7 10 - - - 25 1”
B105 7 1000 4 10 13 15 18 - 40 1” 1/2
B110 12 1000 4 10 13 15 18 20 40 1” 1/2
B115 18 1000 5.5 7 10 12 15 - 40 1” 1/2
B215 23 950 7.5 10 13 15 18 20 40 1” 1/2
B220 34 950 7.5 7 10 12 15 - 50 2”
B325 55 720 18.5 10 13 15 18 20 65 2” 1/2
B330 70 720 18.5 7 10 12 15 - 80 3”
B390 90 720 18.5 5 7 10 12 - 80 3”
B430 116 600 30 10 13 15 18 20 80 3”
B440 155 600 30 7 10 12 15 - 100 4”
B470 240 500 45 10 13 15 18 20 100 4”
B490 330 500 45 7 10 12 15 - 100 4”
B550 400 500 45 5 - 7 - - 125 5”
B660 700 500 75 7 - - - - 150 6”
B680 1050 500 75 4 - - - - 200 8”
1.3.2 Variation of maximum operating pressure according to temperature
The table below lists the maximum differential pressure values, processed by the B series lobe displacement pump, inserted in the LDPU, according to
the size of the pump (from B100 to B680), according to the temperature of the processed fl uid (from 0-70°C, 90°C, 110°C,..) and according to the type of
rotors fi tted: with clearances between rotor and ST standard pumping chamber, SM increased clearances or clearances for HP high pressures.
The values of these clearances between rotors and pumping chamber are shown in the section 1.3.4.
TEMPERATURE
°C
ROTOR
TYPE
B SERIES MODEL PUMP
B100 B105 B110 B115 B215 B220 B325 B330 B390 B430 B440 B470 B490 B550 B660 B680
0°C
a 70°C
ST 7 10 10 7 10 7 10 7 5 10 7 10 7 5 7 5
SM - 15 15 12 15 12 15 12 10 15 12 15 12 7 10 7
HP - - 20 - 20 - 20 - - 20 - 20 - - - -
90°C
ST 5.2 8.8 8.9 6.5 9 6.5 9.1 6.5 4.5 9.1 6.4 9.1 6.3 4.4 6.4 4.4
SM - 15 15 12 15 12 15 12 10 15 12 15 12 7 10 7
HP - - 18.8 - 18.9 - 19 - - 19 - 19 - - - -
110°C
ST 4 7.6 7.8 5.7 8 5.9 8.2 6 - 8.4 5.8 8.4 5.9 5.8 5.8 3.9
SM - 15 15 12 15 21 15 12 - 15 12 15 12 10 10 7
HP - - 17.6 - 17.7 - 18 - - 18 - 18 - - - -
120°C
ST 3.4 7 7.3 5.5 7.5 5.6 7.8 5.7 - 7.9 5.5 7.8 5.4 3.7 5.5 3.7
SM - 14 14.6 11.7 14.5 11.7 14.5 11.7 - 14.6 11.7 14.6 11.6 6.8 9.5 6.8
HP - - 17.1 - 17.2 - 17.6 - - 17.5 - 17.5 - - - -
140°C
ST 2.2 6 6.3 5.1 6.5 5 7 5.2 - 7.2 4.9 7.2 4.9 3.2 4.9 3.2
SM - 13 13.6 11.3 13.6 11.1 13.8 11.2 - 13.7 11.1 13.7 11.1 6.4 8.6 6.4
HP - - 16.1 - 16.3 - 16.8 - - 16.6 - 16.6 - 2.6 - -
160°C
ST - - 5.3 5 5.5 4.4 6.1 4.6 - 6.4 4.3 6.4 4.2 2.6 4.3 2.6
SM - - 12.7 10.8 12.7 10.5 12.9 10.7 - 12.9 10.4 12.7 10.4 6 7.8 6
HP - - 15.1 - 15.3 - 15.8 - - 15.8 - 15.6 - - - -
180°C
ST - - 4.3 4.2 4.5 3.9 5.2 4.1 - 5.5 3.6 5.4 3.6 2 3.6 2
SM - - 12.1 9.9 11.8 10.5 12.1 10.1 - 12 9.7 12 9.7 5.5 6.9 5.5
HP - - 14.1 - 14.3 - 14.9 - - 14.9 - 14.6 - - - -
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