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| Number | Title | Issue Date |
| 7052243 | Pressure regulating valve A pressure maintenance assembly for a domestic water well system. The assembly comprises a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side, and a calibrated bypass. When the valve is c... | 05/30/2006 |
| 6644929 | Pressure regulating valve A pressure maintenance assembly for a domestic water well system. The assembly includes a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side, and a calibrated bypass. When the ... | 11/11/2003 |
| 4190076 | Damping valve for pressure regulator A damping valve for a pressure regulator wherein the valve is actuated by a valve diaphragm and coacts with an inlet orifice formed in the transverse wall separating the inlet from the outlet. An outlet chamber is formed on the outlet side of the wall. A ... | 02/26/1980 |
| 3931830 | Pump systems for liquids A system for pumping of liquid under pressure, in which a pressure switch is adapted to control the starting and stopping of the pump within a safe pressure range, and in the event of malfunction of the pressure switch, the service line and associated plu... | 01/13/1976 |
