W WELKER

Metal high-pressure cylinders used for collection and transportation of compressed gas or liquid samples, sold empty

Sampling, containment and conditioning equipment, namely, positive displacement pumps

Sampling, containment and conditioning equipment, namely, controlled volume pumps for the extraction of samples of natural gas, crude oil and hydrocarbon liquid; control valves for regulating the flow of natural gas; sampling, containment and conditioning equipment, namely, flow and pressure probe regulators for use in the natural gas and crude oil industry; automatic and electronic valves for controlling natural gas; flow regulators for use with natural gas; insertion equipment for natural gas, namely, probes for analyzing the amount and composition of gas flowing through a pipeline, pressure and flow regulators, temperature sensors, flow meters and ultrasonic meter heads; electronic equipment for the inspection of natural gas pipelines; automatic natural gas control valves; automatic control valves for liquids and gases actuated by pneumatic, hydraulic, or electronic means; automatic measured sampling machines actuated by pneumatic, hydraulic or electronic means for gathering samples of and checking the concentration of crude oil, gas and light liquids; laboratory filters for analytical instrumentation for protection or separation of natural gas

Portable, modular and prefabricated heated enclosures for housing sampling, containment and conditioning equipment for natural gas and crude oil to maintain temperatures therein; sampling, containment and conditioning equipment, namely, heaters for natural gas and crude oil; sampling, containment and conditioning equipment, namely, filters for removing contaminants from natural gas and crude oil; filters made of metal for filtering unwanted matter from natural gas