Hydraulic Pumps

Adjustable Flow Reversing Pumps | CRA | CRB

 

Adjustable Flow Reversing Pumps


Selection & Installation Guides | Brochures

Reversing Pump

Reversing pumps are used when hydraulic steering is fitted on boats up to 65 feet L.O.A. (depending on rudder torque). The pumps are switched on by the automatic pilot and make a steering correction to left or right determined by the direction of rotation of the pump motor. The motors are of the permanent magnetic type and reversing direction is accomplished by reversing the motor input current.

The pump has only three moving parts and requires no complicated check valves to prevent rudder movement when de-energized. Output flow is completely adjustable to 50% of rated flow allowing the pump output to be adjusted precisely to the volume of steering cylinder fitted. The pump is exceptionally reliable and delivers more than twice the hydraulic output per watt of input than gear pumps manufactured by competitors.

Motors are heavy duty, a full 85 mm in diameter with long brushes and sealed ball bearings for long service life. The molded rubber mounting foot can be rotated to allow the pump to be mounted on any surface. Three flexible hoses terminating in 1/4-inch JIC swivel fittings (which can be readily adapted to piping systems in all countries) are supplied.

A useful range of accessories can be used to enhance the pump by incorporating added valves and solid state FET switching. The valves mount directly to the pump body. The FET switch mounts adjacent to the pump. No other autopilot pump made offers such advantages.

Benefits of the Octopus Reversing Pumps

Piston pump technology giving higher efficiency and accuracy Fewer moving parts giving increased reliability Variable flow rate to make sure the pump is matched as accurately as possible to the manual steering system Professional cut off valves for simple servicing.
Specifications and Dimensions
 

Specifications and Dimensions

Pump  Model

Dimensions (mm)
Volts
Flow Per Minute
Maximum Pressure

Average*  Current draw(amps)

Peak
Current (amps)
A
B
C
D.C.
cu. cm.
cu. in.
bar
Psi
1012
195
114
100
12
1000
60
70
1000
7-8
25
1024
220
114
100
24
1000
60
70
1000
3-4
12
1212
195
114
100
12
1200
72
70
1000
7-8
25
1224
220
114
100
24
1200
72
70
1000
3-4
12
2012
220
114
100
12
2000
120
55
800
7-8
25
2024
220
114
100
24
2000
120
60
900
      3-4
12

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Installation

The pump set should be mounted on a horizontal surface in a clean dry area. The three hydraulic connections to the steering system should be made using tubing, which meets the steering system manufacturer's specification. The three flexible hoses supplied are used between the pump set and the tubing to isolate vibration. All three hose connections must be used and under no circumstances must the pump set be run without the compensating (breather) line connected to the steering system reservoir.


Optional Accessories
Shut Off Valve SV The shut off valve mounts on the end of the pump enabling the pump unit to be disconnected from the steering system without loss of hand steering.
By-Pass Valve BP12V (12 volt) BP24V (24 volt) The bypass valve can be mounted to the pump and consists of a normally open solenoid valve (which is connected across the pump output) and a translucent plastic reservoir. When the valve is mounted to the pump and the assembly connected to a balanced hydraulic cylinder, the cylinder can be used to drive the rudder on vessels with mechanical steering. No external reservoir is required. Built-in bleeder screws allow the unit to be quickly filled and purged.
Unbalanced Valve UB The unbalanced valve fits on the pump to adapt flow to unbalanced steering cylinders.

Note: For larger pump sizes see our product information sheets on Continuous Running Pump sets CRA and CRB.

Part Number Descriptions

Adjustable Displacement Reversing Pump with - Shut Off Valve - 1/4 NPT Ports

OCTAF101217141

 1000cc/min - 12 VOLT
(80-280cc CYLINDER) 		Peak current 19 Amps Normal current|
6-8 Amps

OCTAF102417141

 1000cc/min - 24 VOLT
(80-280cc CYLINDER) 		Peak current 10 Amps Normal current
3-4 Amps

OCTAF121217141

 1200cc/min - 12 VOLT
(100-350cc CYLINDER) 		Peak current 19 Amps Normal current
6-8 Amps

OCTAF122417141

 1200cc/min - 24 VOLT
(100-350cc CYLINDER) 		Peak current 10 Amps Normal current
3-4 Amps

OCTAF201217141

 2000cc/min - 12 VOLT
(250cc-460cc CYLINDER) 		Peak current 22 Amps Normal current
7-9 Amps

OCTAF202417141

 2000cc/min - 24 VOLT
(250cc-460cc CYLINDER) 		Peak current 11 Amps Normal current
4-5 Amps

*Specifications subject to change without notice.

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