| http://www.w3.org/ns/prov#value | - This standard is a consolidation and revision of the following five individual standards: B40.1, Pressure Indicating Dial Type - Elastic Element Gauges, B40.2, Diaphragm Seals, B40.5, Snubbers, B40.6, Pressure Limiter Valves and B40.7, Pressure Supplier Catalog
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