The safety block allows for isolation of the accumulator for maintenance or system testing, and will function as an emergency shut-off device or pressure relief valve to protect the hydraulic system from over-pressurization or system failure.
[pdf] The first accumulators for 's hydraulic dock machinery were simple raised . Water was pumped to a tank at the top of these towers by steam pumps. When dock machinery required hydraulic power, the of the water's height above ground provided the necessary pressure. These simple accumulators were extremely tall. For instance, , b.
[pdf] When system pressure increases, hydraulic fluid enters the accumulator, forcing the piston to compress the nitrogen gas. This compression stores potential energy, much like compressing a spring.
[pdf] Piston accumulators store hydraulic fluid under pressure, using a movable piston to separate the fluid from a gas pre-charge. This stored energy can be released on demand to supplement pump flow, maintain pressure during system fluctuations, or provide emergency power.
[pdf] An Explosion-proof Photovoltaic Electric Valve is a specially designed valve used in solar power plants and photovoltaic energy systems, specifically crafted to prevent any potential hazards related to explosions, especially in hazardous environments.
[pdf] Unloading valves are used to unload pump flow when an accumulator circuit is fully charged. The excess flow can pass directly to tank at minimum pressure drop or be used for a secondary circuit. The low flow pilot valve can be used in load sense systems or in combination with a logic element.
[pdf] 
