Gas/Hydraulic Valve Operators Safe and Efficient Gas Pipeline Control Process Management

Design and Construction Emerson Process Management – Valve Automation is recognized worldwide for the reliability of its actuators under the most demanding conditions. The gas/ hydraulic products epitomize the quality and performance required for controlling high pressure natural gas pipelines in remote locations and under severe climatic conditions. Bettis has been a global leader in valve control for high pressure natural gas operation for more than 55 years. Bettis gas/hydraulic valve operators have proven themselves as a safe means of valve control in any climate or terrain, from remote desert...

Assembly and Features Quarter-Turn Operators Control Panel Handpump handle Close Gas/Hydraulic Tank Open Gas/Hydraulic Tank (hidden) Control Panel Handpump safety valve Optional Volume Tank Handpump Actuator Linear Gate Valve Operators Hydraulic pressure generating thrust is applied directly to the valve stem through the piston/rod assembly providing full, direct power to the valve stem. These operators provide adjustable shock-free operation. • Readily adaptable to all rising stem valves. • Direct connection to the valve stem. • Materials of construction to suit process or ambient conditions....

Control Schematics (Quarter-turn Operator shown) 10 SUPPLY Typical Control Schematics for Two-Way Manual Operation 4 Operations: • Operate 3-way valve (4) to open or close with power gas • Operate selector valve (6) to enable respective handpump direction Other control arrangements are available to suit customer applications. For example: • Line break detection • Fail close/open by remote signal • Energize to open, manual close • Energize to close, manual reset to open Component List Manual Operation 1 Operator 2 Line Valve 3 Gas/Hydraulic Tank 4 3-Way Valve, Manual 6 Selector Valve 7 Speed Control...

Scotch Yoke Mechanism The scotch yoke mechanism for Bettis quarter-turn valve operators produces a torque curve that closely matches the valve actuation requirements when converting linear output into rotary motion. The scotch yoke produces greater torque value at the beginning and end of each stroke of the piston, precisely where it is required to operate most types of valves. The torque outputs produced by double-acting actuators are expressed as breakaway and run torque. The breakaway torque is that produced at the beginning and the end of the scotch yoke rotation. The run torque is that produced...

Contact Us: Emerson Process Management, Valve Automation facilities at your nearest location: North & South America Middle East & Africa Asia Pacific P.O. Box 105958 Abu Dhabi United Arab Emirates T +971 2 697 2000 F +971 2 555 0364 P.O. Box 32281 Doha Qatar T +974 4 576777 F +974 4 315448 24 Angus Crescent Longmeadow Business Estate East P.O. Box 6908; Greenstone; 1616 Modderfontein, Extension 5 South Africa T +27 11 451 3700 F +27 11 451 3800 9/F Gateway Building No. 10 Ya Bao Road Chaoyang District Beijing 100020 P.R.China T +86 10 8572 6666 F +86 10 8572 6888 No.1 Lai Yuan Road Wuqing Development...