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Integrated Accumulator Charging Valve/Pump Package

Integrated Accumulator Charging Valve/Pump Package

Integrated Accumulator Charging Valve/Pump Package

Product catalog summary
Overview: This document describes an integrated package featuring a MICO® Accumulator Charge Valve and a Haldex W 900 Gear Pump. The system is designed to manage the pressure in redundant accumulators across multiple brake circuits, initiating a charge cycle when pressure drops to a specified low limit and completing it when the high limit is reached. An internal pressure relief valve protects brake circuits from pressure spikes, and excess flow can be redirected for other functions like steering or cooling.
Benefits: The package enhances system reliability by reducing components and potential leak points. Key benefits include energy savings with over 90% pump efficiency, minimal system transients due to the control section's snap-like action, a switch port for low-pressure warnings, and various pump mounting and shaft configurations.
Specifications:
  • Pump displacement: 6.0 to 28 cc/rev. (0.37 to 1.7 in³/rev.)
  • Maximum pressure: 207 bar (3000 PSI) continuous, with higher pressure options available
  • Speed: 500 to 4000 RPM
  • Pump rotation: Clockwise or counterclockwise
  • Pump mounting: SAE A and B 2 bolt flange, with other options available
  • Shaft options: Straight, tapered, spline, tang
  • Pump inlet port: Straight thread o-ring boss or flange
  • Accumulator charge limits: Custom ranges up to 193 bar (2800 PSI)
  • Accumulator charge rate: 1.9 to 19.0 L/min (0.5 to 5.0 GPM) with 4 options
  • Options: Dual or single accumulator
Additional Information: The document notes that dimensions are for a specific model with SAE "A" 2-bolt flange mounting and a tapered shaft, with other options available. MICO, Inc. provides general information and is not liable for errors in printed materials. Specifications are subject to change, and the most recent versions are available on their website.
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Catalog excerpts

Integrated Accumulator Charging Valve/Pump Package-1

Product Bulletin Integrated Accumulator Charge Valve/Pump Package This integrated package features a MICO® Accumulator Charge Valve and a Haldex W 900 Gear Pump to accomplish the accumulator charge function. The function of a dual accumulator charge valve is to control the pressure in redundant accumulators used in two or more brake circuits. When the pressure in either accumulator decays to the specified low limit a charge cycle is initiated. The flow rate at which the accumulators charge is constant throughout the charging cycle . The charging cycle is complete when the pressure in both accumulators reaches the specified high limit. The brake circuits are protected from pressure spikes at startup by an internal pressure relief valve. Excess flow from the valve may be used for steering, cooling or implement functions. A relief valve is required for these functions. The package offers greater system reliability by reducing system components. It reduces potential leak points as well as plumbing and mounting hardware. Additional benefits include: zz Energy savings from greater than 90% overall pump efficiency across pressure and speed ranges zz Minimal system transients at the start and end of the accumulator charging cycle due to snap like action of the control section zz A switch port for direct mounting of low accumulator pressure warning switch zz Wide range of pump mounting and shaft configurations available

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Integrated Accumulator Charging Valve/Pump Package-2

millimeters inches NOTE: Dimensions shown are for a model number which features SAE "A" 2-bolt flange mounting with SAE "A" 1:8 tapered shaft. Other options are available. Contact MICO, Inc. for more information. This document is intended to provide general information about MICO Products. MICO, Inc. has attempted to present accurate information about MICO Products in its catalogs, brochures, and other printed materials. MICO, Inc. is not responsible for errors, inaccuracies, or inconsistencies that may exist in any catalog brochure or other printed materials or any damages arising from or related...

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