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US2020282521A1
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Adjustable pivot bolt for a sealed manhole clamp
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US2019233203A1
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Alternative bottom drop and straight tee discharge from bulk tank having various extensions for automatic and manual operations of the tee valve
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US2018178974A1
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Automatic unloading system for tank trailer or other bulk materials
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US2017219149A1
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Structured tee with wear pocket
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US2016123473A1
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Butterfly valve having integral gaskets for its inlet and outlet seats
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US2016200506A1
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Hopper tee having drop opening with arcuate closure
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US2015308606A1
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Unload elbow with spherical wear pocket
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US2015052863A1
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Filter guide ring
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US2014353962A1
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Structured tee with wear pocket
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US2014103241A1
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Multi-angle butterfly valve extension assembly
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US2014084581A1
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Tee and unload line with integrated cam lock
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US2013306167A1
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Airflow check valve
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US2014191147A1
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Aeration butterfly valve
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US2013228713A1
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Butterfly valve disc to attain accelerated flow
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US2013168956A1
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Hopper tee with comformable arcuate closure member
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US2012261602A1
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Valve handle for butterfly valve for bulk commodity hopper with tee
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US2012241657A1
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Handle extension for butterfly valve
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US2013076021A1
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Structured tee with wear pocket
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US2013074461A1
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Air filter spin flow inlet/outlet housing
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US2012038148A1
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Shallow angle elbow
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