. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nto the reduction limiting brakes. grad. sprinc The graduating spi then hold the pistons inservice position, providedof course that brake pipepressure does not fall fastenough to produce quickaction, and in the serviceposition it will be notedthat the pressure < hambiand chambers 1) and Eare connected, the I ■slide valve has blankedthe application chamberexhaust port, and pnchamber air is flowingthrough the equalizingslide valve to the application chamber and chamberC, and is eff
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nto the reduction limiting brakes. grad. sprinc The graduating spi then hold the pistons inservice position, providedof course that brake pipepressure does not fall fastenough to produce quickaction, and in the serviceposition it will be notedthat the pressure < hambiand chambers 1) and Eare connected, the I ■slide valve has blankedthe application chamberexhaust port, and pnchamber air is flowingthrough the equalizingslide valve to the application chamber and chamberC, and is effective on theapplication piston, forcingit to the position that cutsoff the service brake cyl-inder exhaust and admitsair from the service reser-voir to the service cyl-inder. If the brake valve is now lapped be-fore the point of equalization betweenthe pressure chamber and applicationchamber is reached, the equalizing pis-ton and graduating valve assume a lapposition, admitting no more pressure tothe application chamber, and the actionof the application portion is identical RELEASE CRAD. SPRING. EQUALIZING STOP SPRING capacity DIRECT & GRAD. REL. CAP NO, > \ EMER. CTL EX EMER. RES 3 CONTROL VALVE. SERVICE POSITION. of the service the brake pipe reduction is con-tinued beyond the point of equalization,pressure chamber air can no longer ex-pand, and when the difference in pres-sure exceeds the tension of the equal-izing graduating spring, which is some-what weaker than the release graduat- E4UALIZING GRAO. SPRING RELEASE CRAO. SPRINC\ SER. VALVE
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