National boilers, radiators, and specialties: catalog no. 26 (1920)
National Radiator Company · National Radiator Company · leaf 62
Graduated Type Sectional View <*n%?££^$Z%>* f£de fjl * T ns,°f whi^ each valvevalve we furnish 4 shells any oL of Ui^h^K63 +?f ladlators- With eachbelow the disc. The first shell h^ SSSLf^7*1* aached t0 the disc-holderof the valve; the se££d shcUh^l such^oL??^ 1th? S^i\hei*ht as the liftand…
