Hy-Pro Drive Pilot Operated Check Valve

This G1/4 (BSPP) in-line check valve is designed to close the ‘C’ ports until a pilot pressure is applied to the ’P’ ports in order to move the check valve piston and so open the port. The body is made from anodized aluminium for protection against the harsh marine environment whilst the internal components are made from hardened and toughened steel for extended life.

Application

Designed to be used to positively lock steering cylinders or to prevent the back drive of the helm steering wheel by the autopilot pump should the helm pump not have check valves.

It is designed for use with both balanced and unbalanced cylinders. Where an unbalanced cylinder is used the additional ‘R’ port is connected to the helm pump reservoir bottom port.

Features

• Positive locking of the cylinder.
• Hardened check piston.
• Toughened check seats.
• High grade chromium balls.
• Suitable for balanced and unbalanced cylinders.
• Mounting holes.
• Port identification. Anodised aluminium

Technical Data

Rated flow: 4.5 l/minMaximum pressure: 72 barPilot ratio: 2.25:1Port size: G1/4Ambient operating Temperature -15 to + 55 deg CFluid: ISO VG10 to VG40 hydraulicmineral fluid to ISO 6743-4 HVWeight: 0.31 Kgs