





SER250
DUCO Bidirectional Perimeter Seated Valve with Cone Deflector
Features and Benefits
1. Addition of Cone Deflector protects and extends the integrity of the perimeter seat in heavy solids, slurries and abrasive applications
2. Depending on abrasiveness of the application we offer two options. A 317SS cone which is machined into the body, for low to mildly abrasive applications, and a 420SS heat treated and hardened cone deflector cartridge (RC60) for highly abrasive applications.
3. Perimeter seating guarantees bidirectional bubble tight shutoff. Cavity free body design prevents de-watering of pulp stock and is ideal in slurries, powders, plastics and other solids handling applications
4. Elastomer seat is mechanically retained between body halves preventing movement or separation from the body, unlike standard o-ring seated valves
5. Precision machined body halves serve as scrapper blades, which clean the gate and extend the life of the packing system
6. Two-piece body design simplifies replacement of gate, packing, seat ring and topworks
7. All NPV/DUCO valve body castings are of 317 stainless steel (CG8M). Cone deflectors are available in 317SS and 420SS heat treated and hardened
8. All external valve components – stanchions, bolting, bridge, stem, clevis, packing follower and lockout- are of stainless steel construction which eliminates external corrosion
9. Precision machining of the stuffing box with the live-loaded packing in conjunction with an additional Viton O-ring provides for a very dependable and adjustable packing system
10. All manual valves are equipped with a stainless steel lockout bar. All automated valves are equipped with a stainless steel mechanical lockout and bar
11. Available in sizes 2” – 30”
applications
Cement Powder and Waste Treatment Slurries, Pellets and Granules, Plastic Chips, Slurries with Heavy Solids Such as Lime Slurry, Lime Mud, Animal Rendering Plant Waste and Raw Sewage, Wet and Dry Ash
industries
Animal Food Processing, Cement, Mining, Plastics, Power, Pulp & Paper, Water & Waste Water