HOSE, COUPLINGS, AND FITTINGS 



379 



HOSE, COUPLINGS, AND FITTINGS 



STANDARD FITTINGS 



The M. C. B. code of rules governing the condition of and 

 repairs to freight cars for interchange traffic; and the appendix 

 on same covering passenger cars 

 (as revised June, 1911, and taking 

 effect Sept. 1, 1911), make the 

 1|"X22" air-brake hose and coup- 

 lings standard for both freight- 

 and passenger-brake equipment, 

 instead of the 1 \" X 22" hose and 

 coupli ngs formerly standard. 

 The interchange rules do not 

 change the size of signal hose, 

 the standard still being H"X22". 

 The revised rules do not change 

 hose for locomotives, which remain 

 1J"X 22", although l|"X22"hose 

 and couplings may be used if 

 desired. 



Hose couplings are designated 

 by two letters and a figure, as 

 FP-5. The first letter indicates the group of couplings that can 

 be coupled together. That is, all couplings of group F will 



FIG. 1 



1'P.PC 



FIG. 2 



couple together, but they will not couple with those of group H. 

 The second letter indicates the style of coupling, all P couplings 



