Regulating apparatus for a pressure activated one-way valve

Device for activating a passive ejector valve for pressurising a turbojet engine chamber for an aircraft

Safety valve

Conduit protection system and method

Automatic lightning safety valve for water supply system

Building heating system and method of operation

Smart reset relief valve

Pressure equalizing device for vial access

Pressure-compensated, subsea chemical injection valve

Automatic light-activated portable mist sprayer device

Light-activated mist sprayer system

Passive, double acting, vacuum actuated vent valve

System and method for controlling ignition sources and ventilating systems during high carbon monoxide conditions

Cooling fluid provisioning with location aware sensors