LandOfFree - US Patents - Listing for Valves and valve actuation,With means to increase head and seat contact pressure

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Device for closing an opening of a tank or a tubular conduit

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Device for locking out a pressurized storage container and...

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Device for locking out a pressurized storage container and...

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure

Disc valve

Valves and valve actuation – With means to increase head and seat contact pressure – Spring

Disc valve adaptor

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Dished disc free-disc butterfly valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Door for changing over air passage

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Double disc gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Double disk gate assembly for block and bleed type valves

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure

Double disk gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure

Downstream sealing device

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Drilling mud circulating pit clean out gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Dual action ball valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Dual action handle for floating disc valve and ball-plug valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Dual lift system

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Dual seal ball valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Dual seal ball valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Dual seal valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Dual seal valve