Heavy Slurry and Scaling Applications
Features and Benefits
- NPV O-Port design is generally used in heavy slurry and scaling applications
- Special Electro Polished gate with machine beveled edge is standard in severe services such as phosphoric acid, green liquor and white liquor applications
- Precision machining of body halves and close tolerances to gate eliminates solids build up between components ensuring proper cycling
- Elastomer seated design eliminates pressure on packing in fully open and fully closed positions extending packing life
- Equipped with hardened gate and cartridge seats, O-Port can be used in large scavenger applications for recycle pulper applications
- Positive shutoff bidirectional valve in heavy stock applications eliminates dewatering
- All components – stanchions, bolting, bridge, stem, packing follower – of stainless steel construction which eliminates external corrosion
- Stainless Steel lockout bar on every valve for quick and efficient lockout
- Due to torque requirements of O-Port design, use of gear operator or NPV pneumatic cylinder is recommended above 12″
- NPV O-Port available in sizes 3″ – 30″
Typical applications include:
- High density pulp stock isolation
- Black liquor and pulp stock
- Concentrated black liquor, solids up to 85%
- For severe scaling applications: Phosphoric acid, green liquor and white liquor
