Ram. Rams can be constructed using commercially available check valves orby fabricating check valves. They are also available as manufacturedunits in various sizes and pumping capacities. Rams can be used intandem to pump water if one ram is not large enough to supply the need. Each ram must have its own drive pipe, but all can pump through a commondelivery pipe as shown in Figure 3.
In installing the ram, it is important that it be level, securely attachedto an immovable base, preferably concrete, and that the waste-water bedrained away. The pump can-not operate when submerged. Sincethe ram usually operates on a 24-hour basis the size can be determinedfor delivery over a 24-hour period. Table 4 shows hydraulic ram capacitiesfor one manufacturer's Hydrams.