Latched valve handle
Latching trumpet valve for medical infusions
Latching valve for extendible watering system for fowls
Lever operator for a valve control and actuating mechanism
Limited-rotation valve-control knob with override
Linear spring-loaded actuator for a valve
Load line apparatus
Lock assembly for valve
Lock device and lock method for knife gate valves
Lock valve; a method and system for securing a valve device
Lockable regulatory valve
Locking ball valve
Locking control valve handle
Locking device
Locking device for a ball valve
Locking drain valve
Locking valve
Locking valve with joint allowing packing service
Locking-type gas valve
Lockout modules