www.hpmag.co.uk HYDRAULICS & PNEUMATICS April/May 2026 21 Hydraulic systems continue to increase in capability, pressure, and complexity bringing significant responsibility for safe isolation during maintenance and service work. As industry expectations rise, so does the need for equipment that simplifies compliance with hydraulic Lockout/Tagout (LOTO) requirements. The ROSS H-L-O-X Series has been engineered precisely for this purpose, offering a robust, technician-friendly solution for controlled hydraulic energy isolation. Unlike general shut-off valves often adapted for LOTO procedures, the H-L-O-X is built as a true energy-isolation device. Its standout feature is a dedicated lockable-OFF-only position, ensuring the valve can only be padlocked when hydraulic supply is fully blocked and the downstream circuit is being exhausted. This prevents accidental locking in unsafe positions and removes ambiguity during critical maintenance phases. A defining advantage of the H-L-O-X range is its integrated pressure-verification capability. Each valve includes an analogue gauge at Port A, giving technicians clear visual confirmation that residual hydraulic pressure has been released. This eliminates the need for separate test fittings and supports best-practice procedures for hydraulic safety. The series also incorporates ROSS’ open-transition design, which safely bleeds both the pump side (P) and actuator side (A) to tank during handle movement. This reduces the likelihood of pump deadheading, helps protect components, and promotes a smoother, more predictable isolation process. Fullflow T1 and T2 tank ports ensure energy is dissipated quickly and without restriction—particularly important on higher-flow systems. Built for demanding environments, the H-L-O-X features a caststeel body, carbonsteel internals, and high-wear-resistant Delrin seals, ensuring durability and consistent performance even after extended periods without operation. With sizes available in 1⁄ 2, 3⁄ 4, and 11⁄ 4, handling flows up to 50 GPM and pressures up to 6,000 psi, the series accommodates a wide range of hydraulic architectures. Standard SAE-ORB ports and optional Code 62 flange kits make integration straightforward for OEMs, rebuilders, and maintenance teams alike. By delivering proven energy isolation, clear pressure verification, and controlled depressurisation in one device, the ROSS H-L-O-X Series offers a practical, engineered answer to modern hydraulic safety challenges, giving organisations greater confidence in their LOTO procedures and technicians greater assurance on the job. For further information please visit: www.rossuk.co.uk Enhancing hydraulic lockout confidence
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