CROWN-JUDD

manually operated metal valves for use in oil and gas wells and pipeline systems to regulate the flow of fluid, namely, check valves and pipeline valves

valves in the nature of machinery to regulate the flow of fluid, namely, back pressure valves, check valves and pipeline valves; all the aforesaid being machines or parts of machines

automatic valves for use in oil and gas wells and pipeline systems, namely, check valves and pipeline valve for safety use