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Copyright © AVK Holding A/S, original version, rev. 1, 8-July-2021
Installation, Operation and Maintenance Manual -
Original Version
AVK Series 869 Diaphragm Operated Control Valve
Pressure Sustaining/Relief Valve
AVK diaphragm operated control valves for pressure sustaining/relief applications
automatically maintain a minimum inlet pressure, regardless of changes in flow rate or
outlet pressure.
The main control valve is pilot operated, capable of precise setting and easy
adjustment of wanted inlet pressure sustaining, back pressure or hydraulic un-loading
applications.
Diaphragm Operated Pressure Sustaining/Relief Valve
