Vols. 34- contain official N.A.P.E. directory.Guarantee positive tight connections and extra long service on your pipe lines by using the DART GUARANTEED UNION. ... Model DF-60, a smaller volumetric feeder, is designed to handle a wide variety of chemicals used in water treatment systems at an exact rate of feed. Circle 62 on reply card Manual on insulating materials testing methods and equipment Associated Research, Inc., 3777 W. Belmontanbsp;...
|Title||:||The National Engineer|