Soil moisture sensing apparatus for preventing overwatering
Soil moisture sensor and controller
Solar activated gas light control module
Solar powered programmable valve and methods of operation thereo
Sprinkler flow control systems
Sprinkler flow control systems
Sprinkler system controller
Stand-alone mechanical device for controlled watering
Subaqueous sequence valve mechanism
Subsea control systems and apparatus
Subsea equipment
System for controlling fluid flow
System for metering of breathing gas for accommodation of breath
System for optimum irrigating and fertilizing
Temperature compensating pressure regulator
Temperature compensator for pressure regulator
Temperature responsive fluid control valve
Temperature sensing flow control device
Temperature sensitive valve device
Temperature sensitive water supply shut-off system