US 12,331,848 B2
Top entry valve for severe industrial applications
Nicolas Hervé François Lourdel, Montreal (CA); Michel Sylvain Mario Paquin, Sainte-Cecile de Milton (CA); Fadila Khelfaoui, Montreal (CA); Luc David Vernhes, Hampstead (CA); Vinh Van Nguyen, Houston, TX (US); and Duc Thanh Tran, Montreal (CA)
Assigned to Velan Inc., Montreal (CA)
Filed by Velan Inc., Montreal (CA)
Filed on Nov. 11, 2022, as Appl. No. 17/985,474.
Application 17/985,474 is a continuation in part of application No. 17/921,528, previously published as PCT/IB2021/053479, filed on Apr. 27, 2021.
Claims priority of provisional application 63/016,423, filed on Apr. 28, 2020.
Prior Publication US 2023/0074937 A1, Mar. 9, 2023
Int. Cl. F16K 5/06 (2006.01); F16K 5/20 (2006.01); F16K 27/06 (2006.01); F16K 37/00 (2006.01); F16K 41/02 (2006.01)
CPC F16K 5/0636 (2013.01) [F16K 5/201 (2013.01); F16K 27/067 (2013.01); F16K 37/0041 (2013.01); F16K 37/005 (2013.01); F16K 41/026 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A top entry valve for severe industrial applications, said top entry valve comprising:
a single piece metallic body;
a rotatable valve structure fitted within said body between valve seats also fitted into said body, said valve seats making sealing engagement with said valve structure, said valve structure having an aperture there-through for passing a fluid flow when in a predetermined open rotational position and for blocking a fluid flow when in a predetermined closed rotational position;
said body including a top opening sized to accept entry of the valve structure and its associated seats;
a metal bonnet configured for bolted and sealed connection to the top of said body; and
a rotatable valve operating stem integral with or operatively connected to the top of said valve structure so as to rotate the valve structure when the stem is rotated;
wherein said bonnet has an aperture at its top sized to accept a sealed upper portion of said stem;
wherein said bonnet is configured with external fins to dissipate heat and reduce a temperature of a sealing between bonnet and the stem.