AN ELECTRICALLY OPERATED HYDRAULIC CONTROL VALVE 717 



Fig. 4 — J-7 solenoid valve with manifolds. 



and the lower manifold, P, serves to connect the pressure and exhaust 

 lines to ports in the structure to which the valve is mounted. The joints 

 between the passages in the manifolds and those in the body are sealed 

 by rubber "O" rings that are inserted in the recesses about the holes on 

 the inner faces of the manifolds. These recesses can be seen in Fig. 3, 

 but the "O" rings are not illustrated. Similarly, "O" rings are used to 

 seal the joints between the manifold, P, and the flat surface to which 

 it mounts. 



A pole piece, F, is screwed to each end of the plunger by means of the 

 threads visible in Fig. 2. These parts move as an assembly and form 



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Fig. 5 — Exploded view of J-7 solenoid valve. 



