Catalog: Duff Company Catalog | |
| of the pump to assure even water pressure hydroservant i assures far less cycling ... demand for water the pump cuts off when pressure reaches a predetermined level keeping ... constant pressure in the system when there is no water ... capacities from 30 to 300 gpm regulates pressure in larger capacity systems maintains ... constant pressure output cost less than pressure tank systems of equivalent size or ... air chamber with a sensitive pressure switch which activates the pump to maintain ... both pressure and volume the pump operates as long as ... winding burn-out conventional hydro-pneumatic tank systems in high-capacity ... up to 20 gpm provides constant water pressure ends pressure variations eliminates ... | |
