Product Manual

Table Of Contents
Accessories
SQ, SQE, CU 331, and SP
19
138
Connecting pieces
The tables below show the range of connecting pieces
for connection of thread-to-flange and
thread-to-thread.
Thread-to- thread
Fig. 73 Dimensional sketch and photo of connecting piece thread-to-thread
Zinc anodes
Application
Cathodic protection by means of zinc can be used for
corrosion protection of SP pumps in chloride-
containing liquids such as brackish water and
seawater.
Sacrificial anodes are placed on the outside of the
pump and motor as protection against corrosion.
The number of anodes required depends on the pump
and motor in question.
Please contact Grundfos for further details.
Liquid temperatures
Seawater:
Up to 95 °F (35 °C).
Brackish water (min. 1500 ppm (g/m
3
) chloride):
Up to 95 °F (35 °C).
Anode life
The zinc anodes have a life of one to four years,
depending on operating conditions (temperature, flow
and chloride content).
Product numbers of zinc anodes
TM01 2397 1698 - GrA2555
L
B
A
Type Connecting piece
Dimensions
Product number
Thread-to-thread
L
[in. (mm)]
A B 304 stainless steel 316 stainless steel
385S
475S
NPT 5 NPT 4 NPT 5 NPT 4 4.76 (121) 190064 190586
NPT 5 NPT 6 NPT 5 NPT 6 5.91 (150) 190070 190592
625S
800S
1100S
NPT 6 NPT 5 NPT 6 NPT 5 5.91 (150) 200135 200645
Zinc anodes for pumps
Product
number
Used for pump type
SP 5S to 77S
85S
150S
230S
300S
385S
475S
625S
800S
1100S
96421444 ---------
96421445 - ●●●● -----
96421447 - - - - - ●● ---
96421448 - - ---- ---
96421449 - - ----- --
96421450 - - -----●●●
Zinc anodes for motors
4" motors 6" motors 8" motors 10" motors
96421444 96421446 96421450 96564808