WELKER...WHEN EXCELLENCE COUNTS!

odorant injection pumps for adding a malodorous scent to natural gas to assist in the detection of leaks

automatic control valves for liquids and gases actuated by pneumatic, hydraulic, or electronic means; optical inspection apparatus for industrial use, namely, scope used for inspection of pipelines, vessels, and various other cavities; and automatic measured sampling machines actuated by pneumatic, hydraulic, or electronic means for gathering samples of crude oil, gas, and light liquids