ISO 9644:1993
Agricultural irrigation equipment; pressure losses in irrigation valves; test method

Standard No.

ISO 9644:1993

Release Date

1993

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2008-07

Replace By

ISO 9644:1993/Amd 1:1998

Latest

ISO 9644:2018

Scope

Specifies a test method under steady-state conditions when water flows through the valves. Also describes the method of reporting pertinent test data. The valve performance specifications presented are of such scope and accuracy as to assist irrigation system designers when comparing pressure losses through various types of irrigation valves. The measurement of pressure losses provides a means for determining the relationship between pressure loss and flow-rate through the valve.

ISO 9644:1993 history

• 2018 ISO 9644:2018 Agricultural irrigation equipment - Pressure losses in irrigation valves - Test method
• 2008 ISO 9644:2008 Agricultural irrigation equipment - Pressure losses in irrigation valves - Test method
• 1998 ISO 9644:1993/Amd 1:1998 Agricultural irrigation equipment - Pressure losses in irrigation valves - Test method; Amendment 1
• 1993 ISO 9644:1993 Agricultural irrigation equipment; pressure losses in irrigation valves; test method