Main Characteristics - Johnson Pump TG GS2-25 Instruction Manual

3.5

Main characteristics

The pump size is designated by the displacement volume of 100 revolutions expressed
in litres (or dm
millimetres.
TG GS pump size
2-25
3-32
6-40
15-50
23-65
58-80
86-100
185-125
Legend
d :
B :
D :
Vs-100 :
n.max :
n.mot :
Q.th :
v.u :
v.i :
∆p
:
p.test :
Maximum viscosity
Shaft sealing type
Single mechanical seal
GS with Burgmann MG12
GS with Burgmann M7N
*) Remark:
Figures are for Newtonian liquids at operating temperature. The maximum allowable
viscosity between the sliding faces of the mechanical seal depends on nature of liquid
(Newtonian, plastic etc.), the sliding speed of the seal faces and the mechanical seal
construction.
16
) but rounded followed by the nominal port diameter expressed in
3
d B D Vs-100
(mm) (mm) (mm) (dm 3 )
25 13.5 65 1.83
32 22 65 2.99
40 28 80 5.8
50 40 100 14.5
65 47 115 22.7
80 60 160 57.6
100 75 175 85.8
125 100 224 185
port diameter (inlet and outlet port)
width of idler gear and length of rotor teeth
peripheral diameter of rotor (outside diameter)
displaced volume pro 100 revolutions
maximum allowable shaft speed in rpm
normal speed of direct drive electric motor (at 50Hz frequency)
theoretical capacity without slip at differential pressure = 0 bar
peripheral velocity of rotor
velocity of liquid in the ports at Qth (inlet and outlet port)
maximum working pressure = differential pressure
hydrostatic test pressure
n.max n.mot Q.th Q.th
(min -1 ) (min -1 ) (l/s) (m 3 /h)
1800 0.5 2.0
1450 0.4 1.6
1800 0.9 3.2
1450 0.7 2.6
1800 1.7 6.3
1450 1.4 5.0
1500 3.6 13.1
1450 3.5 12.6
1500 5.7 20.4
1450 5.5 19.7
1050 10.1 36.3
960 9.2 33.2
960 960 13.7 49.4
750 23 83
725 22 80
Maximum viscosity
(mPa.s) *)
GS
3 000
5 000
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
∆p
v.u v.i p.test
(m/s) (m/s) (bar) (bar)
6.1 0.7 10 15
4.9 0,5
6.1 1.1 10 15
4.9 0.9
7.5 1.4 10 15
6.1 1.1
7.9 1.8 10 15
7.6 1.8
9.0 1.7 10 15
8.7 1.7
8.8 2.0 10 15
8.0 1.8
8.8 1.7 10 15
8.8 1.9 10 15
8.5 1.8