New Hydraulic HBH Series Safety Valve Systems Come with a Relief Valve on Inlet

Press Release Summary:

Hydraulic HBH Series Block and Hold Valve Systems are available in D25 and D32 body sizes in 1-1/2 and 2, Code 62 flange port sizes. The units are designed for blocking valve systems in critical applications where hydraulically controlled cylinders’ safe loading is required. The position sensor of the unit is used for external monitoring. They are offered with enhanced tamper-resistant design that prevents alteration of the valve from unauthorized personnel.

Original Press Release:

Ross Controls® Announces New Hydraulic HBH Series Safety Valve Systems

TROY, MI – September 2018 – ROSS Controls® introduces its new Hydraulic Block & Hold valve systems designed for external monitoring, up to Category-4, PL e for safety applications

ROSS, who is already known throughout the industry for reliable pneumatic safety-related valves and solutions, now expands upon these strengths to offer solutions for users of hydraulic systems.

The ROSS Hydraulic Block & Hold Series feature a manifold base mounted design available in two body sizes D25 and D32, port sizes 1-1/2 and 2, Code 62 Flange. These valve systems feature a relief valve on inlet, and position sensors for external monitoring. The HBH Series valve system is enhanced with a tamper-resistant design that prevents unauthorized personnel from altering the valve.

The HBH Series valves are redundant blocking valve systems designed for critical applications where safe load holding is required for hydraulically controlled cylinders. The safety function of the Hydraulic Block & Hold Series valve system is to stop cylinder motion and hold the cylinder in position in the event of loss of supply pressure and/or electrical power. 

The ROSS® HBH Series safety system is a redundant 3/2 normally closed function valve system, spool type design, 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.

ROSS has always been at the forefront of pneumatic innovations and now gives customers even wider options with its hydraulic offerings and will continue to expand its hydraulic line of products.

For more information on ROSS® HBB Series hydraulic valve systems, contact your local ROSS distributor, ROSS’ customer service or visit ROSS’ website.

ROSS CONTROLS Customer Service

800-438-7677 (in the U.S.) or 248-764-1800 (outside the U.S.)



Established in 1921, ROSS CONTROLS® is headquartered in Troy, Michigan and is ISO certified. ROSS® designs and manufactures pneumatic valves, control systems, and is universally recognized as a global leader in fluid power safety solutions and poppet valve technology. ROSS® provides standard products and customized ROSS/FLEX® solutions for machinery and automation. Selling to original equipment manufacturers and end-users throughout the world, ROSS® reaches its global customer base through the global sales team located in the United States, Germany, France, England, Japan, China, Brazil, India, and Canada. In addition to its global sales team, ROSS® markets its products through a worldwide network of more than 100 distributors.

For more information contact:

Scott Hilt – 248-764-1813       

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