Downhole fire control
Downstream fluid pressure responsive emergency shutdown valve
Downstream low fluid pressure emergency shutoff valve
Dry break valve assembly
Dry safety device for an inflammable gas
Dual fluid path breakaway swivel coupling
Dual inline rupture pin release and reseating spring loaded reli
Dual temperature fire damper releasing system
Duckbilled check valves and methods of making and using same
Ducting fire protection
Ducting fire protection
Eccentric scored rupture disk assembly
Electrical control for inflating valve for containers for compre
Electromagnetic valve operator
Electropneumatic pressure relief indicator
Emergency disconnector for fluid loading and unloading lines
Emergency fuel shut-off valve
Emergency gas or fuel shut-off device
Emergency override with hermetic seal
Emergency shut-off device