TRIPLE VALVES 207 



PC. No. Ref. No. Name of Part 



16,301 21 Graduating spring. 



16,305 22 Cylinder-cap gasket. 



4.879 23 Bolt and nut, for cylinder cap. 



4.880 24 Bolt and nut, for check- valve case. 

 13,136 25 By-pass piston, includes 26. 

 14,284 26 By-pass-piston ring. 



36,208 27 By-pass valve. 



13,861 29 By-pass-valve spring. 



14,560 30 By-pass-valve cap. 



12,984 31 By-pass-piston cap. 



16,214 32 Strainer. 



15,549 33 E-7 safety valve. 



12.848 34 End cap. 



12.794 Triple valve gasket. 



If the triple valve is used in connection with a brake cylinder 

 equipped with a high-speed reducing valve, the safety valve 

 is not used, and orders must specify as follows: Piece No. 

 19,061, L-3 triple valve, complete, less safety valve, with 

 safety-valve opening plugged; and Piece No. 19,052, cap nut 

 for safety-valve opening. 



STYLES OF TYPE L TRIPLE VALVES 



The LN passenger brake equipment derives its name from 

 the fact that a type L triple valve is used in combination with 

 a type N passenger-brake cylinder. The older form of equip- 

 ment was known as the PM equipment, because a P triple 

 was used in combination with an M brake cylinder. The 

 type N passenger-brake cylinder is designed for use with the 

 L triple valve, the seat for the triple on the pressure head 

 being suitable for the L triple. All the pipe connections are 

 made direct to the brake-cylinder head, no pipe connections 

 being made to the triple valve. A triple can be removed and 

 replaced by another in a short time, and without disturbing 

 any of the pipe connections, by simply removing from the 

 triple-valve stud the nuts that hold the triple valve to the 

 cylinder head. The brake-cylinder head has pipe connections 

 for the pipes from the brake pipe, auxiliary reservoir, brake 

 cylinder, and supplementary reservoir. 



The L triple valve is made in three styles: Style L-l-B is 

 used with 8-in. and 10-in. brake cylinders; style L-2-A, with 



*Listed for convenience only; not included in L-3 triple valve. 



