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Summary test report: Walworth, Bolted-Bonnet, Solid-Wedge Gate Valve METC SOA Test Valve No. A-20 state-of-the-art Lockhopper Valve-testing and Development Project

Technical Report ·
OSTI ID:6446073
The Walworth, Bolted-Bonnet, Solid-Wedge Gate Valve (METC SOA Test Valve No. A-20) performed well in testing with clean gases. In testing with limestone solids, the bonnet and body cavities tended to pack tight with solids. Also, solids were being caught between the gate and seats when the valve closed. Modifications to the purge system virtually eliminated accumulations of solids in the bonnet and reduced the frequency of solids being caught between the gate and seats. After a total of over 6000 test-valve cycles, the valve jammed as a result of particles trapped between the gate and seats. Freeing the gate required heating the valve body and applying over 100 times the normal operating force.
Research Organization:
Department of Energy, Morgantown, WV (USA). Morgantown Energy Technology Center
DOE Contract Number:
AM21-80MC14522
OSTI ID:
6446073
Report Number(s):
DOE/MC-170; ON: DE81025182
Country of Publication:
United States
Language:
English