. Air brake text for engineers and firemen; . PLATE 130. List of Operative Parts. The operative parts are as followsRV 103. Regulating Nut. RV 127. Valve. RV 105A. Regulating Spring. RV 129. Lever 107. Valve Seat. 26/ NEW YORK QUICK ACTION TRIPLE VALVES. This triple valve is called a quick action triple for the reasonthat when an emergency application is made it carries auxiliaryreservoir air to the brake cylinder almost instantly, equalizing QT 137 QT 139. PLATE 131, the pressure through the large opening, past the quick actionvalve, augmented to some extent through the service open
. Air brake text for engineers and firemen; . PLATE 130. List of Operative Parts. The operative parts are as followsRV 103. Regulating Nut. RV 127. Valve. RV 105A. Regulating Spring. RV 129. Lever 107. Valve Seat. 26/ NEW YORK QUICK ACTION TRIPLE VALVES. This triple valve is called a quick action triple for the reasonthat when an emergency application is made it carries auxiliaryreservoir air to the brake cylinder almost instantly, equalizing QT 137 QT 139. PLATE 131, the pressure through the large opening, past the quick actionvalve, augmented to some extent through the service openingpast the graduating valve and, by reason of venting brake pipe 268 NEW YORK QUICK ACTION TRIPLE VALVES. air to the atmosphere, it produces a quick serial action of all otherquick action triples throughout the train. When a service application is made air passes slowly from theauxiliary reservoir to the brake cylinder, through the graduatingservice port only^ and there is no local venting of brake pipe quick action triple valve, as shown respectively in release,service, lap and emergency positions on Plates 131, 132, 133 and134, is used on freight cars. Port F of this triple valve is drilledthrough the stem, the same as it is on the new passenger triplevalve. List of Parts. The parts of the quick action triple valveshown on Plates 131 to 136 inclusive are as follows: QT 126. Triple Head or 130. JMiddle Section ofFlange and seal forVent Valve.
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