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S. A. Armstrong Limited
Catalog excerpts
Product Data DIFFERENTIAL PRESSURE METER This Armstrong Meter is equipped with one 2-1/2" round dial gauge, 0 - 60' pressure differential, 300 psig (20 bar) maximum working pressure, two five foot hoses with PMP connections in a plastic carrying case. (ascending), ideally suited to measure pressure drops across various types of equipment; i.e. balancing valves, indicators, pumps, filters, etc. For use with Venturis and Orifice Plates For use with Ciruit Balancing Valves DIFFERENTIAL PRESSURE METER These Armstrong Meters are equipped with one 4-1/2" round dial gauge, 0-135" pressure differential, one 4-1/2" round dial gauge, 0 - 60' pressure differential, 300 psig (20 bar) maximum working pressure, two five foot hoses with PMP connections in a plastic carrying case. (APDM Models supplied with Orifice/ Venturis Adapters.) The 135-60 meters have an accuracy of +/- 5 to +/- 3-2-3% (ascending) with over range pressure protection. They are ideal for measuring pressure drops across equipment used in HVAC systems; i.e. balancing valves, indicators, pumps, filters, etc. Toronto, Ontario Armstrong Pumps Limited Peartree Road, Stanway Colchester, Essex Montreal, Quebec
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