Agricultural irrigation equipment. Volumetric valves. General requirements and test methods1 Scope This document specifies general requirements and test methods for volumetric valves able to automatically deliver preset quantities of water. It is applicable to valves actuated by pipeline pressure and flow alone, and which do not need any other, external, source of energy. NOTE Volumetric valves are typically required to operate correctly with different qualities of irrigation water at a variety of flow rates and at temperatures between 5 C

For each family specification except C1

This part of the EN 16157 series specifies the informational structures

a) fulfilling quality requirements for hollow sections (see Annex A)

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Contents of BS EN 12393-3:

Surface integration of the intensity component normal to the measurement surface is approximated by subdividing the measurement surface into contiguous partial surfaces

BS EN 61702 defines minimum actual performance values to be obtained on-site

This European Standard does not include any requirement for metering performance

intake screens

Health and safety professionals• Regulatory bodies and technical committees

Testing of box pallets is required to determine any need for corrective actions in the manufacturing process

The temperature sensor(s) may be integrated into the recorder or be remote from it [external sensor(s)]