Cyclopedia of heating, plumbing and sanitation; a complete reference work . the steam passing through it. The drip pipe from the ex-haust should be connected withthe drip tank; or, if the exhausthas been passed through a first-class separator, it may, if desired,be returned to the feed-waterheater. WTien a closed type feed-water heater is used see Fig. in ,a separate tank must be providedfor the returns from the heatingsystems. High-pressure dripsare trapped t this tank. In thecase of the heater shown in !.17. the live—team returns aretrapped to it. A common typeof trap is shown in section in
Cyclopedia of heating, plumbing and sanitation; a complete reference work . the steam passing through it. The drip pipe from the ex-haust should be connected withthe drip tank; or, if the exhausthas been passed through a first-class separator, it may, if desired,be returned to the feed-waterheater. WTien a closed type feed-water heater is used see Fig. in ,a separate tank must be providedfor the returns from the heatingsystems. High-pressure dripsare trapped t this tank. In thecase of the heater shown in !.17. the live—team returns aretrapped to it. A common typeof trap is shown in section in U. In the position shown,the float or bucket hinged asshown, is held up by the buoyancy of the water, and keeps the valveat the upper end of the spindle in contact with the seat, preventingthe escape of steam entering with the water through the inlet. Tluwater, rising around the bucket, overflows it and overcomes it- buoy-ancy, causing it to fall and open the valve, the steam pressure on thewater then forcing it out of the bucket until a point is reached where. •;,.• Peed Water B 259 36 STEAM AND HOT WATER FITTING the buoyancy of the buckel again comes into play and closes the valveuntil the action is again repeated. An extremely simple form of float trap is shown in Fig. 42, the - /met
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