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
Construction
SEG
7
12
7. Construction
Material specification, SEG pumps
The position numbers in the table below refer to the sectional drawings and exploded views on the following pages.
Pos. Description Material AISI/ASTM EN standard
6a Pin Stainless steel 301 1.4310
7a Rivet Stainless steel A2/304 1.4301
9a Key Stainless steel - -
37a O-rings NBR - -
44 Grinder ring Stainless steel 630 1.4542
45 Grinder head Stainless steel 630 1.4542
48 Stator - - -
49 Impeller Cast iron A48 30B EN-GJL-200
50 Pump housing Cast iron A48 30B EN-GJL-200
55 Stator housing Cast iron A48 30B EN-GJL-200
58 Shaft seal carrier Cast iron A48 30B EN-GJL-200
66 Locking ring Stainless steel - -
68 Adjusting nut Stainless steel 431 1.4057
76 Nameplate Stainless steel 304 1.4301
92 Clamp Stainless steel 304 1.4301
102 O-ring NBR - -
103 Bush Stainless steel 431 1.4057
104 Seal ring NBR - -
105 Shaft seal
Primary seal [2.0 hp (1.5 kW)]: SiC/SiC
--
Secondary seal [2.0 hp (1.5 kW)]: lip seal, NBR
Primary seal [3.0 to 5.5 hp (2.6 to 4.0 kW)]: SiC/SiC
Secondary seal [3.0 to 5.5 hp (2.6 to 4.0 kW)]:
carbon/aluminium oxide
Other components: NBR, stainless steel
107 O-rings NBR - -
112a Retaining ring Stainless steel - -
150a Stator in housing, complete --
153 Bearing bottom
2.0 hp (1.5 kW): 6303
3.0 to 5.5 hp (2.6 to 4.0 kW): 3205
--
153a
Spacer ring Stainless steel
--
153b --
154 Bearing top
2.0 hp (1.5 kW): 6201
3.0 to 5.5 hp (2.6 to 4.0 kW): 6205
--
155 Oil chamber Cast iron A48 30B EN-GJL-200
158 Corrugated spring Steel - -
159 O-ring NBR - -
172 Rotor/shaft
Shaft part at rotor: steel
Shaft end at hydraulics: stainless steel
304 1.0533
1.4301
173 Screw Steel - ISO 7045 Grade 4.8
173a Washer Steel - DIN 6798 A
176 Inner plug part PET - -
181 Outer plug part CR rubber, cable H07RN-F CF-8 1.4308
188a Screw Stainless steel 304 1.4301
190 Lifting bracket Stainless steel CF-8 1.4308
193 Oil screw Stainless steel 304 A2-70
193a Oil Shell Ondina X420 - -
194 Gasket Nylon - -
195 Lock washer Stainless steel - -
198 O-ring NBR - -
Paint Two-component epoxy - -