Piping systems for rehabilitation of underground drains, sewers and water supply networks — Part 1: ...
This document specifies requirements and test methods for pipes and fittings which are part of piping systems for the rehabilitation by means of renovation and trenchless replacement of underground non-pressure and pressure drainage and sewerage networks and water supply networks, which transport water intended for human consumption, including raw water pipelines.
It is applicable to polyethylene…
Controls and protective devices for gaseous and liquid fuels — General requirements
ISO 23550 specifies safety, construction, performance and testing requirements for controls for gas burners and gas burning appliances for use with gaseous fuels (see definitions).
This document applies to controls with a declared maximum operating pressures up to and including 500 kPa with connections up to and including DN 250. This document provides the general requirements that are intended…
