National boilers, radiators, and specialties: catalog no. 26 (1920)
National Radiator Company · National Radiator Company · leaf 55
ent, watertight joint. An important reason for Nationalpush nipple assembled, radiators isthat they can be taken apart and puttogether again, when necessary, inone-third of the time required of screwnipple assembled radiators—and nospecial tools are required. Oftentimes a radiator to be installed… … The National Push Nipple 56 NATIONAL RADIATOR NIPPLES finJhiftf! ?2sh ni?]?!?s are ?ade- of heayy resilient malleable cast-irononentts10 TW^vl^ pa?.ofvan Jnch anl-fit accurately in the machinedopenings. 1 hey may he used in hand or machine assembling. When used forhand assembling special repressed…
