Senior Flexonics Pathway Builds Large Diameter Stop Valves

For Mid America Boiler Feed Pump Turbine Exhaust

Most valve manufacturers start with castings or forgings to produce large diameter shut off valves. Extensive machining is required to produce the critical dimensions and surface refinement. The castings and forgings are generally long lead items.

By drawing on experience in precision fabrication of dampers and expansion joints Senior Flexonics Pathway (SFP), developed an innovative disc and seat design that requires minimal machining of fabricated weldments to achieve valve performance objectives.

Applying precision fabricating methods, SFP produced these 88” diameter stop valves under contract to Hitachi America Ltd. for the Mid America Energy plant in Council Bluffs, IA. The fabrication techniques applied by SFP proved to be a very economical high quality approach to production of lowpressure stop valves. Production lead times were considerably better with this approach than with comparable cast or forged valves.