Flowserve DVSH-RO Between Bearings Pump - Axially Split, API, Single Case
Product Brand
Flowserve
Type
Between Bearings Pumps
SubType
Single Case Pumps - Axially Split - API
About this product
Flowserve DVSH-RO single-stage, high-pressure membrane feed pumps are engineered to deliver high-efficiency operation and long-term reliability in heavy-duty seawater reverse osmosis (SWRO) processes. Based on the widely used DVSH ISO 13709/API 610 (BB1) pump, the DVSH-RO pump is configured to meet the specific performance demands of desalination processes. A side-by-side nozzle configuration and optimized hydraulics provide the best hydraulic fit to maximize operating efficiency and stability. Corrosion-resistant materials ensure long-term service life without degradation. The result is uncompromising reliability over a wide flow range.
- Double-suction impeller provides axial hydraulic thrust balance and is designed for maximum hydraulic efficiency with minimal NPSHR. It is dynamically balanced to assure vibration-free operation as per API/ISO requirements.
- Double-volute, axially split casing design minimizes hydraulic radial forces in any condition down to the minimum flow, thereby reducing shaft deflection and increasing the life of bearings, seals and wear rings.
- Heavy-duty shaft design ensures trouble-free performance by operating under the first critical speed. The large diameter and short bearing span minimize deflection.
- Suction and discharge nozzles are cast in the lower casing half to permit pump disassembly without disturbing the piping.
- Nozzles are designed to handle external forces and moments equal to or in excess of ISO 13709/API 610 specifications.
- Renewable wear rings provide hydraulic stability and high-efficiency operation. They also ensure the thrust bearings are properly loaded. Optional laser-hardened or non-metallic wear rings are available.
- Generously sized seal chambers ensure there is sufficient liquid around the seal faces for optimal flushing and cooling.
- Seal chambers accept single cartridge-type mechanical seals as well as double or tandem cartridge-type designs.