Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 446
f the water-seal. Another mechanical seal trap,shown in Fig. 208, is the exact oppo-site of the previous example. Theball sinks by gravity, and effects amechanical seal even when the waterseal is absent. This trap is not soeasily siphoned as a plain trap. Ithas a clean-out screw, and can be hadwith… … Fig. 208. Trap with Mechanical SealActing by Gravity. 373 150 PLUMBING ■^•IrrirTTrrTrrrZnrT^Y^-rTTTTrrrTy^ A combined mechanical and water-seal trap is shown in Fig. 209,in which 2) is a hollow, flexible ball inclosing a metal ball D^, thusgiving a resilient seating surface that finds its place by…
Architecture · Building · Carpentry
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