MERLA

side pocket mandrels, gas lift mandrels, mandrels for use in oil and gas wells; static design plungers for use in plunger - lift type oil wells

pheumatically operated valves for use in gas lift applications in oil wells; pneumatically operated valves for use with tubular conduits; namely, pipes; well head bumpers for use in plunger-lift type oil wells; dynamic design plungers for use in plunger-lift type oil wells; static design plungers for use in plunger-lift type oil wells; pneumatically operated pumps for injecting chemicals into earth wells

manually operated valves for use with tubular conduits; namely, pipes; mechanically operated injection valves for injecting fluids into earth wells; electronic control devices for well pumping control systems; electronic control devices for controlling mechanized valves; electronic control devices for controlling pumps

catalytic space heaters which use propane or butane as fuel