ISO 18984:2025

Ball valves for thermoplastics piping systems for hot and cold water installations under pressure — Types, dimensions and requirements ISO 18984:2025

Publication date:   Jul 22, 2025

Scope

This document is applicable to two-way or multi-way ball valves manufactured with all types of polypropylene (PP) and chlorinated polyvinylchloride (PVC-C) thermoplastic materials to be used for the transport of pressurized water whether or not intended for human consumption (domestic systems) for applications in buildings and utility branches.
NOTE 1        The two-way valve is generally used for sectioning and control of flows, and the multi-way valve is used to divert or mix the flows. For information on their functionality, see ISO 16135:2006, Annex B.
NOTE 2        The reader of this document is informed that the water intended for human consumption is subjected to national, regional or local regulatory provisions as applicable.
The application classes are indicated in ISO 15874 and ISO 15877 series.
This document specifies valve characteristics as follows:
—     dimensions for assembly in the relevant pipelines,
—     physical and mechanical requirements.
Other materials can fit the scope of this document if the application classes are specified in a material related specific standard.
Ball valves specified in this document are not intended to be used in conjunction with pipes made by metallic material and copper alloys.