Thermoplastics valves. Fatigue strength. Test method1 Scope This document specifies the endurance test necessary to confirm the ability of hand operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and or environments, or excessive fluid velocities and cavitation. NOTE Concerning the chemical aggression of the materials, a classification

5 Tests and evaluation methods

Anyone who refurbishes or modifies machines

Construction industries

It includes rules for the general information strategy

This document does not cover all legislative requirements

Requirements for these other functions are not included in this document

The changes compared to the previous edition are as follows:

Suppliers of threaded unions

The upper neutron energy of the instruments covered by the standard is increased to 20 MeV

This helps in withstanding these tests conducted on the connectors

C/N (dB) for 5 % ESR in typical urban channel

BS EN 60835-3-13 specifies the test method and procedures for digital microwave radio transmission systems