Levitronix BPS-2000 - 3 Engineering Information; 3.1 Sealing and Material Concept

User Manual for BPS-2000
www.levitronix.com
PL-4021-00, Rev06, DCO# 21-037
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3 Engineering Information
3.1 Sealing and Material Concept
Figure 14: Sealing and material concept for motors with pump heads LPP-2000.22/21 (PFA)
System
Component
Item
Materials
No.
Description
Pump-Head
LPP-2000.22
LPP-2000.21
1
Pump casing (lid and bottom, 1” tube fitting)
PFA
2a
2b
Reinforcing pump housing (lid and bottom)
Radial support ring
PP (+ GF 30%)
Stainless Steel + PTFE coating
3
Static sealing O-ring of pump housing
LPP-2000.22: Perfluorelastomer Kalrez
®
LPP-2000.21: Welded housing, no sealing.
4
8x M8x40 mm screws for pump casing
PTFE coated stainless steel
5
Impeller
PFA
6
Rotor magnet
Rare-earth material
7
4x M8x30 mm screws for pump/motor mounting
PTFE coated stainless steel
Motors
LPM-2000.2
LPM-2000.8
LPM-2000.15
LPM-2000.18
8
Flat gasket for motor housing sealing
FPM (= FKM)
9
Cable bushing
PVDF, cable jacket is FEP
10
Motor housing
LPM-2000.2/8/15: ETFE coating, LPM-2000.18: Epoxy coating
Coils and electromagnetic circuit potted with an epoxy compound
(UL94 V0).
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Materials of water-cooling connections
PFA, PVDF, FPM (LPM-2000.18 motor only)
Table 7: Materials used in the LPM-2000 motors with LPP-2000.22/21 pump heads
Note 1: See Figure 15 and Table 8 for information on hazloc motors LPM-2000.9/17.
3
4
8
7
Standard Motors
LPM-2000.2/8/15
2b
9
10
5
6
1
2a
Water-Cooled Motor
LPM-2000.18
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