SAILTEC's Kobelt Hydraulische Steuerung Katalog - page 30

h y d r a u l i c s t e e r i n g a n d a c c e s s o r i e s
This valve is intended to be used in power steering systems.
Its purpose is to allow use of the help pump when the power-driven
hydraulic pumps are not operational. Able to retain all of the
hydraulic fluid in the steering system, the 7143/7153 prevents fluid
loss, making the helm pump fully functional.
All hydraulic valves, because of their mechanical fit, lose fluid in
various amounts. This would consequently cause the hydraulic fluid
to drain from the highest level to the lowest level. In most cases, the
helm pump is located in the wheelhouse which is above the main
hydraulic tank. The oil will eventually drain back to the main tank
and leave the system dry. The 7143/7153 valve, however, will retain
all of the fluid in the system and, in an emergency condition, will
allow the helm pump to be used almost indefinitely. If this unit is
used on a 7147 or 7148 Kobelt Power Assist Unit, it is important to
have a buffer system in order to get these units to shift to manual
The 7143/7153 requires a minimum working pressure of 200 PSI at
all times.
3.3 lbs. (1.5 kg)
8.4 lbs. (3.8 kg)
15 GPM
40 GPM
1500 PSI Maximum 2000PSI Maximum
7 1 4 3 / 7 1 5 3
n o n - d r a i n b a c k v a lv e
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