Devices without moving parts for the prevention of contamination of water by backflow

Pt.1. Specification for type A air gaps

Bibliographic Details
Main Author:	8096 British Standards Institution
Format:
Subjects:	Pipe fittings Vacuum-gages
Online Access:	http://www.bsi-global.com/en/My-BSI/My-Subscriptions/BSOL/

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