MARINE AUTOPILOT SECONDARY STEERING CYLINDER UNLOADER VALVE
 
The Autopilot Cylinder Unloader valve is a line mounted valve, used to bypass the hydraulic steering cylinder to enable the boat to be steered manually.  The solenoid operated valve is connected to the ’clutch’ connection of an autopilot. It is available in 12/24 V DC and can be used in systems up to 72 bar. It can be used with balanced and unbalanced cylinders.
 
Description
 
The normally open solenoid operated unloader valve is a compact line mounted G1/4 (BSPP)ported manifold.  The low power consumption 12W coils are available in 12V/24V DC variants.
With an anodized body and an IP67 rating this valve has been designed for the harsh marine environment.
 
Application
Designed to be used in autopilot steering applications, this valve is used to bypass the auto pilot hydraulic steering cylinder so that manual steering can be used.  It can be used with balanced cylinders or by connecting the ‘R’ port to the reservoir with unbalanced cylinders. The design has been optimized to enable the coil to be energized for extended periods of time.
 
Features

• Marine environment protected
• Compact .
• 12V/24V DC variants.
• Low power consumption.
• Used for balanced/unbalanced cylinders.
• Line mounted.
• Long energizing capacity.

 
Technical Data
 
Voltage                            12V/24V DC
Power                              12W
Rated Flow                      4.5 l/min
Maximum pressure         72 bar
Ambient operating
temperature                    -15 to + 55 deg C
Protection                       IP67
Cable Ø (not supplied)    4-9mm
Fluid ISO VG10 to VG40 hydraulic
mineral fluid to ISO 6743-4 HV
Weight 0.66 kg