Apparatus for closing side openings into pipelines
Apparatus for controlling flow through a conduit
Arch end cap
Bayonet-type closure for line stopper fittings
Bottom nozzle repair apparatus
Conduit isolation diaphragm assembly
Device for plugging the interior of a pipe
Double plug head for plugging pipe
Dual chamber orifice fitting isolation valve
Dual purpose pipe stopper mechanism
Dual slide gate valve and method for using same
Emissions eliminator blind
Fluid blocking device
Gas main stopper
Gate valve with expandable and contractable closure member
Insertable line stopper plug for pipelines
Isolation tool
Line blind
Line blind assembly having interchangeable DISC
Mechanisms to set a hollow device into and to retrieve said...