. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . s normal position being off its seat, due to the down-ward pressure of the regulating spring D on the dia-phragm E, which, in turn, bears upon regulating valveC. This valve being open, allows the steam to pass tochamber above piston G, which it forces downward,opening main valve H and allowing the steam from theboiler to pass to the train heating system at the outlet J connects the under side of diaphragm E with theheating system. When the pressure under
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . s normal position being off its seat, due to the down-ward pressure of the regulating spring D on the dia-phragm E, which, in turn, bears upon regulating valveC. This valve being open, allows the steam to pass tochamber above piston G, which it forces downward,opening main valve H and allowing the steam from theboiler to pass to the train heating system at the outlet J connects the under side of diaphragm E with theheating system. When the pressure under the diaphragmreaches the pressure that the adjusting spring D is setto withstand, the slightly additional pressure will causediaphragm E to move upward far enough to release reg-ulating valve C, allowing the valve to be seated by thetension of spring K. No further supply of steam fromthe inlet side can reach the chamber above piston G andall pressure that is entrapped above piston G can passaround the piston, the steam equalizing with the steampressure underneath. Piston G being equally balanced, 74 STEAM-HEAT REDUCING Plate 12 TAAFEL STEAM-HEAT REDUCING VALVE permits main valve spring L to close main valve H, shut-ting off further supply of steam to the heating soon as the pressure in the steam-heat line and under-neath diaphragm E becomes slightly reduced, adjustingspring D again forces the diaphragm downward, unseat-ing regulating valve C, which again allows a supply ofsteam to the system. To adjust this valve, screw downon regulating cap M. This puts a tension on adjustingspring D. If too much pressure is admitted to the steam- STEAM-HEAT REDUCING VALVES. 75 heat system, slack off on regulating cap M, which re-duces the tension on the adjusting spring D. THE GOLD PRESSURE REGULATOR. Operating Parts. A. Inlet L. Top Spring B. Outlet M. Dome of Regulator C. Bolt and Nut for N. Lock-Nut Dome and Body 0. Top Flange DD . Balancing Spindle P. Bottom Flange F.
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Keywords: ., bookauthornationalcorrespondenc, bookcentury1900, bookdecade1900
