Capacitance liquid level sensing and touch control system

Chemical concentration control device

Closure apparatus with pressure test device

Combination shut-off and resetable excess flow valve

Connector for prohibiting gas from flowing back

Conservation system and method

Constant-flow regulator for gravity-fed liquids

Container having collapsible inline fluid-weight control device

Container having fluid-weight control device

Container having fluid-weight control device

Continuous laminar fluid mixing in micro-electromechanical...

Control apparatus and method for controlling fluid flows and pre

Control apparatus, method and diagnostic for hydraulic fill...

Control means and method for controlling feed gases

Control member for a valve and method for determining fluid...

Control of fuel gas blending

Control system for on-off valves resulting in proportional...

Controllable valve particularly for delivering a pulsed flow...

Controlling fuel vapor venting in a fuel tank

Cooling tower operation with automated pH control and blowdown