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| Number | Title | Issue Date |
| 7156369 | Valve control device The device (1) comprises a support structure (2) in which at least a first opening (8, 9) is defined, a shutter (13) which is mounted for piloting in that structure (2) and which is adapted to take up a least a first and a second a... | 01/02/2007 |
| 6877716 | Motor-operated damper device A motor-operated damper device includes a baffle driving device equipped with a motor, a baffle that is driven by the baffle driving device, a frame defining an opening section that is closed and opened by the baffle, the opening section having a peripheral edge sec... | 04/12/2005 |
| 6241213 | Diaphragm valve A valve including: a bonnet; a body secured to the bonnet and including at least two ports and at least one weir positioned between the ports; a valve stem being movably coupled with the bonnet, the valve stem including first and second longitudinal ends,... | 06/05/2001 |
| 5566922 | Gate valve device A gate valve device which includes a partition wall having an opening, a valve member movable along the partition wall to open or close the opening, a driving system for moving the valve member, and a pressing mechanism for pressing the valve member towar... | 10/22/1996 |
| 4556195 | Force and multiplication control valve A force and multiplication control valve which utilizes ball leverage to produce multiplied forces on a ball lock seat device. Constantly changing wear surfaces provide self-cleaning and self-compensating wear characteristics to provide extremely high rel... | 12/03/1985 |
| 4431161 | Rotary valve A rotary valve has a valve body with a pair of fluid ports providing fluid exits on a face of the valve body. The fluid ports are connected to corresponding fluid channels in the valve body extending between the fluid ports and fluid inlet connections to ... | 02/14/1984 |
| 3934813 | Concrete pump valve A valve for a concrete pump having a front valve closing portion which in the closed position prevents flow through a T-pipe section, a supporting structure secured to the T-pipe section and an annular sealing band carried by the supporting structure and ... | 01/27/1976 |
