Page 203 - Vetus

HYDRAULIC TANKS

Hydraulic systems require the installation of a hydraulic tank, as a collection point for hot hydraulic fluid returning from all
of the user devices in the system, and as a reservoir from which the pump or pumps can draw the hydraulic fluid and
re-pressurize it for re-use. The returning hydraulic fluid foams when it reaches the tank and returns to atmospheric pressure.
So the tank must be sized so that the fluid is in the tank long enough for the foam to “boil out”, returning the fluid to a
completely liquid state, able to maintain its volume as it is re-pressurized by the pump(s).
Aluminum alloy tanks HT1010 and HT1028 may contribute to cooling of the hydraulic fluid, but as the rate of cooling
depends on the engine room air temperatue and convective air flow over the surfaces of the tanks the difference in
temperature between the outer face of the tank and the ambient air temperature around the tank (∆t) (itself dependent
on engine room air temperature and freedom of air movement for convection), the cooling capacity of the tank is
unpredictable. Therefore, VETUS recommends that sea-water cooled hydraulic fluid (oil) coolers be included in all systems.
If for reasons of economy, an oil cooler is not initially installed, operating temperatures must be carefully monitored and an
oil cooler retrofitted if necessary.
• The lid of this hydraulic tank serves as the base plate for • Mounted so that suction hose runs down to pumps
all control units required to operate the various hydraulic • Connections for more than one pump
devices • Mounted on bulkhead, shelf or platform built by installer
• VETUS supplies this hydraulic tank ready to use and or OEM
preinstalled with all control units ordered • Valves mounted on lid for convenience
• Additional control units can be supplied as separate • Space for the tank must be planned and reserved in the
components, if required engine room, adjacent to the pumps
• Tagged for connections

The table shown below provides guidance for tank selection for systems driving thrusters. All other device will be covered if
the system is adequately sized for the thrusters.
Hydraulic reservoir tanks
Examples of hydraulic reservoir tanks.

HT1010 HT1010BS

HT1028B

HPTANK

Tank type HT1028B HPTANK HT1010 HT1010BS
Tank capacity gallon (litres) 5 (20) 10 (38) 9 (35) 4 (17)
Weight lbs (kg) 75 (34) 150 (68) 64 (29) 53 (24)
Total height inches (mm) 19 /64 (490) 22 /64 (580) 22 /4 (565) 16 /32 (415)
19
53
11
1
Wide inches (mm) 24 /32 x 18 /64 (620 x 480) 28 /64 x 23 /8 (730 x 600) 20 /64 x 8 /64 (530 x 210) 18 /2 x 12 /64 (470 x 310)
17
5
55
13
1
13
47
57
Volt 24 (12 on request) 24 (12 on request) 24 (12 on request) 24 (12 on request)
Vibration dampers (ordered HT3010 (set of 4) HT3010 (set of 4) HT3010 (set of 4) HT3020 (set of 4)
separately) Height inches (mm) 19 /32 (15) 1 /16 (30) 1 /16 (30) 1 /16 (30)
3
3
3
Material body aluminium alloy stainless steel (AISI 316) aluminium alloy stainless steel (AISI 316)
Creators of Boat Systems 203