TRIPLE VALVES 



171 



the auxiliary and brake cylinders equalize, to obtain a full 

 emergency application with plain triples. 



K-l TRIPLE VALVE 



The K-l triple valve, shown in Fig. 4, is used with 6-in. and 

 8-in. freight-car brake cylinders; its weight is 40 Ib. The 

 piece number of the valve, complete, is 27,852; the piece and 

 reference numbers of its parts are as follows: 



12,852 



10,032 

 6,520 



12,514 

 1.733 

 1.740 

 1,735 

 1,737 

 1,745 



12,850 



PC. No. Ref. No. Name of Part 



27,851 2 Body, complete, includes |-in. pipe plug. 



12,513 3 Slide valve. 



4 Main piston, includes 5. 



5 Main-piston ring. 



6 Slide-valve spring. 



7 Graduating valve. 



8 Emergency piston. 



9 Emergency-valve seat. 



10 Emergency valve, includes 11 and 28. 



11 Rubber seat. 



12 Check-valve spring. 



13 Check-valve case, complete includes J-in. 



pipe plug. 



14 Check-valve-case gasket. 



15 Check-valve. 



16 Strainer. 



17 1-in. union nut. 



18 1-in. union swivel. 



19 Cylinder cap. 



20 Graduating-stem nut. 



21 Graduating stem. 



22 Graduating spring. 



23 Cylinder-cap gasket. 



24 Bolt and nut, for cylinder cap. 



25 Capscrew. 

 J-in. pipe plug. 



27 1-in. union Basket. 



28 Emergency-valve nut. 



29 Retarding-device body, marked K-l. 

 31 Retarding stem. 



33 Retarding spring. 



35 Graduating-valve spring. 



1,754 

 1,744 

 1,751 

 1,749 

 1,750 

 1,746 

 1,747 

 1,748 

 1,057 

 1,753 

 4,879 

 1,752 

 1,004 

 1,755 

 1,738 

 27,328 

 27,846 

 29,105 

 9,862 

 1,734 

 2,427 



|-in. plug for exhaust outlet, not shown. 

 *Trii" 



iple- valve gasket. 



The standard retarded-release portion of the K-l triple valve, 

 illustrated in Fig. 4 and 5 (b), is not interchangeable with the 



*Listed for convenience only; not included in K-l triple 

 valve. 



