US 12,467,543 B2
Fuse-coated ball valve trim
Joel Rybicki, Balcatta (AU); Duncan Bews, Balcatta (AU); Gary Lantzke, Balcatta (AU); Joe Ellis, Balcatta (AU); and David Wood, Balcatta (AU)
Assigned to CALLIDUS PROCESS SOLUTIONS PTY LTD, Balcatta (AU)
Appl. No. 17/797,413
Filed by CALLIDUS PROCESS SOLUTIONS PTY LTD, Balcatta (AU)
PCT Filed Feb. 1, 2021, PCT No. PCT/IB2021/050761
§ 371(c)(1), (2) Date Aug. 3, 2022,
PCT Pub. No. WO2021/156724, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 2020900303 (AU), filed on Feb. 4, 2020.
Prior Publication US 2023/0067445 A1, Mar. 2, 2023
Int. Cl. F16K 5/06 (2006.01)
CPC F16K 5/0657 (2013.01) [F16K 5/0605 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A valve ball for a severe service ball valve, comprising:
a metal ball having a flow port extending along a first axis between a first opening and a second opening;
a first pair of sealing bands axially aligned with the flow port, each sealing band surrounding a respective one of the first and second openings; and
a second pair of sealing bands transversely located on the outer surface of the ball, the second pair being spaced apart and positioned on opposite sides of the flow port along a second axis orthogonal to the first axis,
wherein each of the sealing bands is formed from a material different from that of the metal ball, and
wherein each sealing band is metallurgically fused to the surface of the metal ball such that a fused microstructure is formed at the interface between the sealing band and the metal ball.