WABCO MICO ACV-DMO-RV Product Explanation, Operating Information, And Service Instructions Download Page 1

IMPORTANT INFORMATION

A

Due to allowable operating temperature of accumulator 

charging valve avoid contact or burn injury may occur.

B

Be sure system energy is relieved from accumulator 

charging valve before removing from machine. See 

machine operating instructions for procedures to relieve 

system energy.

C

Relief valve is preset at the factory. DO NOT READJUST 

or system damage or failure may occur.

D

Do not exceed the high limit pressure setting indicated 

in TABLE 1 and TABLE 2 or system damage or failure 

may occur.

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 to reliance on information in them. Materials and specifications for MICO Products set

 

forth in catalogs, brochures, and other printed materials are subject to change without notice or obligation. Refer to www.mico.com for the most recent versions of 

our literature. If you have any questions concerning MICO Products, please contact MICO, Inc. All MICO Products and service are sold and provided subject to the 

MICO Warranty at www.mico.com in effect on the date of sale or supply.

MICO is a trademark and registered trademark of MICO, Inc. MICO is registered in the U.S. Patent and Trademark Office as well as in Australia, Canada, Indonesia, Japan, Peoples Republic of China, South Korea, and the European Community.

MICO, Inc. 

1911 Lee Boulevard / North Mankato, MN U.S.A. 56003-2507 

Tel: 

+1 507 625 6426     

Fax:

 +1 507 625 3212

Form No. 81-463-019 

Revised 2017-06-01  

www.mico.com

ACCUMULATOR 

CHARGING VALVE 

with Relief Valve

Product Explanation, 

Operating Information, 

and Service Instructions

ACV-DMO-RV

PRODUCT EXPLANATION

The accumulator charging valve is designed for installation 

in an open center hydraulic system between the pump and

the downstream secondary hydraulic devices.
The accumulator charging valve supplies oil on demand to 

the accumulator from the open center circuit. Accumulator 

charging is accomplished at a preset rate (GPM) and is 

relatively constant within the preset pressure limits.

The flow to the downstream secondary hydraulic devices will

 

be reduced fractionally for a short time when the accumulator 

is charging. This does not noticeably affect the operation of 

these components. Full system pressure is available to the 

downstream secondary hydraulic devices at all times provided 

oil delivery and pressure from the pump is not impeded.

The accumulator charging valve incorporates a full flow

 

relief valve to limit the maximum pressure in the hydraulic 

system.
The accumulator upper and lower pressure limits, charging 

flow rate, and the relief valve setting are set at the time of

 

manufacture.

OPERATING INFORMATION

End user must provide proper maintenance of valve, should 

it become inoperable, by replacing the valve or servicing it 

with the proper repair kit. See TABLE 1 on page 3 or TABLE 2 

on page 5 for the proper repair kit number. Observe service 

instruction procedures on following pages. See Warnings A, B, 

C, and D below.

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