Improved disengaging means for hose couplings
Improved double block and bleed plug
Improved downhole recovery production tube system
Improved duct bleed leak detection system
Improved emergency release tool
Improved end connector for high pressure reinforced rubber hose
Improved fitting with sequential sealing action
Improved floating device for pipes
Improved garden hose with backbone
Improved gasket for duct, pipe and tube joints
Improved gate valve sealing structure
Improved heat transfer between tracer and pipe
Improved insulation material
Improved joint for variable wall thickness conduit
Improved pipe clamp inner seal
Improved pipe coupling seal
Improved pipe coupling with built-in grip
Improved pipe for conveying fluids such as petroleum products
Improved pipe joint construction and coupling therefor
Improved pipe lining product, process and apparatus