Product Overview
Table Of Contents
- 1. Introduction
- 2. Identification
- 3. Selection of product
- 4. Performance range
- 5. Product range
- 6. Variants
- 7. Construction
- 8. Product description
- 9. Curve charts
- 10. Performance curves and technical data
- SEG.A15.20.(EX).2.1.603
- SEG.A15.20.R2.(EX).2.1.603
- SEG.A15.20.R1.(EX).2.1.603
- SEG.A15.20.(EX).2.60H/L/M
- SEG.A15.20.R2.(EX).2.60H/M
- SEG.A15.20.R1.(EX).2.60H/M
- SEG.A15.30.(EX).2.60H/L/M
- SEG.A15.40.(EX).2.60H/L/M
- SEG.A15.55.(EX).2.60H/L/M
- SEG.A20.30.(EX).2.60H/L/M
- SEG.A20.40.(EX).2.60H/L/M
- SEG.A20.55.(EX).2.60H/L/M
- 11. Dimensions and weights
- 12. Accessories
- 13. Grundfos Product Center
Curve charts
SEG
9
22
Curve conditions
The guidelines below apply to the curves on pages 23
to 34.
• Tolerances are according to HI 11.6:2012 3B.
• The curves show the pump performance with
different impeller diameters at the rated speed.
• The curves apply to the pumping of airless water at
a temperature of 68 °F (20 °C) and a kinematic
viscosity of 1 cSt (1 mm
2
/s).
• The Eff curves show the efficiency of the pump for
the different impeller diameters.
• In the case of other densities than 62.4 lb/ft
3
(1000
kg/m
3
), the outlet pressure is proportional to the
density.
• When pumping liquids with a density higher than
62.4 lb/ft
3
(1000 kg/m
3
), motors with
correspondingly higher outputs must be used.
Calculation of total head
The total head consists of the height difference
between the measuring points + the differential head +
the dynamic head.
H
total
= H
geo
+ H
stat
+ H
dyn
Performance tests
The requested duty point of every pump is tested
according to HI 11.6:2012 3B, and without certification.
In the case of pumps ordered on the basis of impeller
diameter only (no requested duty point), the pump will
be tested at a duty point which is 2/3 of the maximum
flow of the published performance curve which is
related to the ordered impeller diameter (according to
HI 11.6:2012 3B).
If the customer requires either more points on the
curve to be checked or certain minimum performances
or certificates, individual measurements must be
made, and a certificate can be ordered when the pump
is ordered.
Certificates
Certificates must be confirmed for every order and are
available on request. See List of variants, page 11.
Witness test
It is possible for the customer to witness the testing
procedure according to HI 11.6:2012 3B.
The witness test is not a certificate and will not result in
a written statement from Grundfos. The witness test
itself is only a guarantee that everything is carried out
as prescribed in the testing procedure.
If the customer wants to witness the test of the pump
performance, this request must be stated on the order.
H
geo
: Height difference between measuring points.
H
stat
: Differential head across the pump.
H
dyn
: Calculated values based on the velocity of the
pumped liquid on the inlet and outlet sides of the
pump.