RECIPROCATING PUMPS 



589 



FIG. 277. Outside End-packed Plunger Pump for pressures up to 1,120 Ibs. per 



square inch. 



This type of pump has the advantage that only two glands need packing 

 as against three in the centre-packed type, although the latter type lends 

 itself to a more compact construction. 



Delivery 



FIG. 278. Valve Box for High- 

 Pressure Steam Pump. 



