Our continuous involvement with valve technology has resulted in the development of reliable analytical models, design improvements, and innovative solutions to persistent valve/actuator problems that have defied the industry for decades. Our expertise spans from the conceptual stage through detail design, analysis, prototype development, testing, manufacturing; troubleshooting; and root cause analysis of valve and actuator problems.

Valve Engineering Capabilities

• JOG MOV PV Implementation Assistance
• Valve research and development
• Valve failure analysis
• New valve designs for demanding applications
• Valve and actuator mechanical testing
• Flow loop testing
• Qualification of valve designs to meet structural and performance specifications
• Analytical models to predict valve performance under conditions difficult/expensive to test
• CFD analysis to quantify forces and moments on valve internals
• Valve/actuator design modifications
• Valve analysis per ASME and API code requirements
• Plant-wide application reviews and development of preventive maintenance programs

Analytical model predictions of the hydrodynamic torque of various butterfly valve discs (including the effect of upstream flow disturbances) were validated by scale model and full-scale valve testing.

Valve Engineering Examples

• Analytical models to predict performance of motor-operated, air-operated, and hydraulically operated gate, butterfly, and globe valves, safety relief valves, and check valves
• A patented Sentinel gate valve to provide tight shut-off and eliminate degradation in critical nuclear power plant applications
• A tapered plug valve that eliminates taper locking of the plug under rapid hydraulic transients
• Bending moment valve testing to determine internal distortions as well as structural and performance capabilities under simulated piping loads
• Wear and fatigue models for check valves to prevent failure and to prioritize maintenance
• A low impact, gaseous cryogenic pressure relief valve with modulating pressure control for NASA's ground support facilities
• A miniature high temperature, high pressure, low noise throttle valve for underwater propulsion systems in defense applications

Coupled fluid flow, thermal, and structural analysis supported the development of mathematical models to predict unwedging thrust for gate valves under thermal binding and pressure locking conditions.

 

Kalsi Engineering, Inc.   745 Park Two Drive   Sugar Land, Texas  77478-2885  Tel: (281) 240-6500    Fax: (281) 240-0255

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