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iNim k OkTl irtiCMCi TO Medical, A2SC March 13, 197* MCA "Meat Wrappers Asthma" (Polyvinyl Chloride) George Roush, Jr., HD A2SA cc J.

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H \ H t i; Research Scholarships and Fellowships Supported hy Industry C.

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Valoes The Smolensky Valve Co., Inc.

American Society of Heating and Ventilating Engineers Guide, 1924-25 American Society of Heating and Ventilating Engineers Guide, 1924-25 Fig. 55.

American Society of Heating and Ventilating Engineers Guide, 1925-26 Fig. 77 shows that 80 gallons water per minute are required.

D iam eter of Pipe C ubic F eet per M in u te American Society of Heating and Ventilating Engineers Guide, 1925-26 9 3 3 3 3 $g e. 3S S o o J S f HOW TO USE THE FRICTION CHART While this chart can be used to determine the friction of air which is flowing through ducts, it can also be used for determining the size of a pipe to handle a specified volume or the velocity that will be necessary.

American Society of Heating and Ventilating Engineers Guide, 1925-26 use'of a trapat the junction of the hood and branch pipe is permissible, provided it is not allowed' to. fill up completely.

Temperature Regulation Honeywell Heating Specialties Company Wabash, Indiana Manufacturers of Honeywell Temperature Regulators for Residential or other Heating Plants--Hot Water, Vapor, Steam, or Hot Air.

American Society of Heating and Ventilating Engineers Guide, 1926-27 Gravity hot water heating systems may be designed for even circula tion at any range of water temperature difference between flow and return, within practical limits.