DeZURIK Hydraulic Power Unit (HPU) Systems
Documentation
Specifications
Overview
Application
Custom HPU systems are designed for a wide range of applications across multiple industries. Applications requiring consistent hydraulic power delivered at specific pressures and flows are strong targets for custom HPU units. Examples include marine deck equipment such as winches and cranes and rolling applications in metal processing.
Base Frame
Custom HPU skids utilize a carbon steel C channel frame design with forklift pockets and lifting lugs for ease of handling. Reservoirs are offered in 316 stainless steel construction. Skid frames are epoxy primed and powder coated as standard, although application-specific paint systems can be applied as necessary.
Controls
Both mechanical and electrical devices help control the HPU skid.
Direct operated solenoid valves are integrated into the design, allowing for flow control with a manual override option. Pilot operated check or counter balance valves are installed for load holding and load control, while pressure reducing valves are utilized for force control. When required, accumulated systems utilize zero leakage poppet valves to prevent loss of accumulator energy.
HPU control panels are custom engineered to meet customer requirements, ranging from hard wire relays to PLC controls. Control panel enclosures are offered as NEMA 12 carbon steel or NEMA 4X stainless steel as standard, but can meet more stringent NEMA ratings if required. The control panel is manufactured in accordance with UL 508A and is designed to be DCS compatible.
Data
Additional Features
Additional features included in custom HPU skids include:
– Pump start-up manifolds designed with outlet check valve, main system relief valve and gauges to ensure clean pump starts.
– Pump motors are offered as IEEE 841 compliant as standard for optimal performance in extreme operating conditions.
– Air bleed valves help prevent cavitation by venting trapped air to the HPU skid reservoir.
– 10 micron pressure filtration is utilized for low contaminate levels and increased component life.
– Accumulators are available in either piston or bladder format to enable consistent hydraulic fluid flow while the HPU is in service and provide stored fluid energy for emergency actuation upon power loss.
Benefits
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