24 February, 2020

ROSS Controls launches new hydraulic HBB Series safety valve systems

08 November, 2018

ROSS Controls has introduced its new Hydraulic Block & Bleed valve systems designed for external monitoring, up to Category-4, PL e for safety applications. ROSS – already known for its pneumatic safety-related valves and solutions – now expands on these strengths to offer solutions for users of hydraulic systems.

Tamper-resistant design

The ROSS Hydraulic Block & Bleed Series features a manifold base mounted design available in three body sizes D03, D05, and D07, port sizes SAE-8, SAE-12, and 1-1/4 Code 61 flange. These valve systems feature a relief valve on inlet and position sensors for external monitoring. The HBB Series valve system is enhanced with a tamper-resistant design that prevents unauthorised personnel from altering the valve.

The safety function of the Hydraulic Block & Bleed Series valve system is to block hydraulic supply pressure and to bleed downstream pressure back to tank.

The ROSS HBB Series safety system is a redundant 3/2 normally closed function valve system, spool type design, direct solenoid or solenoid pilot operated. This new system is designed for external monitoring for safe redundant operation and is equipped with position sensors for external monitoring by an electrical safety control system.


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