F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 17/04 (2006.01)
Patent
CA 2045991
Abstract of the Disclosure A check valve especially suited for use with a sand slurry. The check element comprises a frusto-conical surface which engages a sharp edged seat. The surfaces forming the seat intersect at an acute angle, preferably in the range of 30° to 60°. Contact between the sloped surface of the check element and the seat edge pushes sand particles aside and prevents them from interfering with the closing of the valve. A spring which urges the check element toward the seat is segregated from the slurry to prevent fouling of the spring. RH
Barree Robert D.
Macrae & Co.
Marathon Oil Company
LandOfFree
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