ČSN EN 1680
Plastové potrubní systémy - Ventily pro polyetylenové potrubní systémy - Stanovení netěsnosti při ohybu a po ohybu aplikovaném na ovládací mechanismus

ČSN EN 1680

This document specifies a test method for PE valves to maintain tightness during and after being subjected to a force, applied as a bending moment to the operating mechanism.
Valves according to these standards are intended for use in polyethylene (PE) piping systems for the transport of fluids.
When specified in the product standard, this document can be applied to valves of material other than PE.