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YR Turbine Valve Seat Retention Update by waqar ahmad is a document available to read on EtoBox.

What is YR Turbine Valve Seat Retention Update about?

This document provides guidance on a new method for retaining governor valve seats in Elliott YR turbines. Originally, steel blocks were welded to the steam chest, but this could damage the turbine if the welds were inadequate. The new preferred method uses three pins installed in the governor valve cover, with a clearance of 0.020" to 0.060" between the valve seat and pins. The clearance depends on steam inlet temperature, ranging from 0.020" below 500°F to scaled increments up to 0.040" at 625°F. The pins

Author

waqar ahmad

Language

EN