US 11,946,557 B2
Valve with unobstructed flow path having increased flow coefficient
Mark Shorback, Southport, NC (US); Jörg Massow, Kreuztal (DE); Venkatesh Sureshrao Kulkarni, Pune (IN); Vishal Ambadas Chaudhari, Pune (IN); Ranjit Narayan Bhalkar, Pune (IN); Prashant Ramchandra Sangule, Pune (IN); and Samson Kay, Cincinnati, OH (US)
Assigned to Crane ChemPharma & Energy Corp., The Woodlands, TX (US)
Filed by Crane ChemPharma & Energy Corp., The Woodlands, TX (US)
Filed on Feb. 10, 2021, as Appl. No. 17/248,852.
Claims priority of provisional application 62/976,579, filed on Feb. 14, 2020.
Prior Publication US 2021/0254737 A1, Aug. 19, 2021
Int. Cl. F16K 1/20 (2006.01); F16K 3/22 (2006.01); F16K 3/314 (2006.01); F16K 27/04 (2006.01)
CPC F16K 27/04 (2013.01) [F16K 3/22 (2013.01); F16K 3/314 (2013.01); F16K 1/20 (2013.01); F16K 1/205 (2013.01); F16K 1/2078 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A unibody valve comprising:
a valve body including:
a first end and a second end spaced apart along a longitudinal axis;
a central portion disposed between the first end and the second end and includes an interior chamber;
a first flow passageway extending through a first tubular portion between the central portion and a first flange at the first end; and
a second flow passageway extending through a second tubular portion between the central portion and a second flange at the second end, wherein the first flow passageway and the second flow passageway are coaxial along the longitudinal axis and include a fixed cross-sectional area corresponding to a maximum diameter of the first flow passageway; and
a disc disposed within the interior chamber,
wherein the interior chamber includes:
an enlarged side portion positioned outside of the at least one of the first flow passageway and the second flow passageway projected along the longitudinal axis, wherein the disc is disposed in the enlarged side portion when in an open position; and
an anti-rotation edge disposed on at least one side of the enlarged side portion, wherein the anti-rotation edge prevents the disc from rotating beyond the anti-rotation edge,
wherein the first flow passageway, the second flow passageway, and the interior chamber are completely unobstructed along the fixed cross-sectional area, between the first flange and the second flange when each of the first flow passageway and the second flow passageway is projected along the longitudinal axis, and
wherein the valve body defines a concave valve seat engaged by a seal coupled to the disc when the disc is in a closed position, wherein a first inclined portion disposed on a first side of the concave valve seat includes a longer incline than a second inclined portion disposed on a second side of the concave valve seat, and wherein, during engagement of the seal of the disc on the concave valve seat, non-parallel portions of the seal contact the first inclined portion and the second inclined portion of the concave valve seat.