Valve Modifications, Casting Repairs and Upgrades


SVI has the capability, experience and qualified staff to perform many different types of valve modifications. Adding by-pass or "warm-up" lines, retrofitting motor operated gear boxes in place of manual hand wheels and converting standard raised face flanges to ring joint designs are some typical modifications performed at our shop as well as in the field.

During the modification and upgrade process, ASME B16.34 requires NDE inspections in the form of RT and MT examinations to be performed. These inspections frequently identify body casting defects that require repairs. We will excavate out defective areas to sound base metal then refill with weld metal using our qualified staff welders and following accepted weld procedures. After repairs are made, final NDE will be performed to verify all defects have been removed and the casting meets ASME B16.34 acceptance criteria.