Rotary metering valve assembly and method of modifying contact surface for reducing gauge wringing
作者： Todd Haugsjaahabink , Kevin M. Rankin , Glen A. Pruden , Peter M. Ballard
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摘要: A rotary metering valve assembly includes a stationary body plate having first contact surface. Also included is second surface disposed in with the of plate, wherein configured to rotate relative plate. At least one and comprises flatness less than about 2.4 μm (about 93 μin) roughness at 0.2 8 μin).
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