D Series ANSI Chemical Process Pump is fully interchangeable with Durco Mark III. Sunbo has been producing the D Series for over 15 years.
All impellers are investment casted and cover up to Group 2 sizes. In addition, Group 1 casings are investment-casted as are our power-end parts, which are also available in cast steel in favor of ductile. All other sizes are resin-casted with pickling (acid washing) to ensure smooth surface finish.
To ensure quality, we randomly Poke-Oke: we meticulously check threaded holes by fitting their bolts to ensure the threads are clean and clear. We keep a complete inspection record, available on request. If we find any part where the tolerance isn¡¯t spot on, we junk the part, pure and simple. All casings are of course pressure tested and all impellers and dynamic balanced.
It is our standard to deliver all of our impellers in foam molded packing in boxes. If your company has any specific packaging requirements, from branding of castings to box labels, please let us know.
