SIGMA VALVES
automatic valves for use in pneumatic and hydraulic control systems and oil and gas wells, namely, pressure controlled fluid operated valves, manual reset relay valves, automatic reset relay valves, reservoir vent valves, pneumatic quick exhaust valves, hydraulic quick exhaust valves, pneumatic check valves, hydraulic check valves, fusible plugs, fusible valves, fuel cutoff valves, emergency shutdown valves, manual operated valves, pilot operated relay valves, pump shut off valves, hydraulic ...
Cancelled · November 15, 2001 · 76338170 ·