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AGA XQ0009
ANSI B109.2 - 2000 for Diaphram-Type Gas Displacement Meters (500 Cubic Feet Per Hour Capacity and Over)
This publication represents a basic standard for safe operation, and substantial and durable construction for diaphragm-type gas displacement meters having a gas flow rating of 500 cubic feet per hour capacity (14.6 m3/h) and over at 0.5 inch water column (125 Pa) differential pressure at standard conditions.
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American Gas Association [aga]
American Gas Association [aga]