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VOP (VS3) Axial Flow and VOA (VS2) Mixed Flow
Standards
• API 610 (VS3 and VS2), latest edition
• Flowserve
Operating Parameters
VOA:
• Flows to 32 000 m3/h (140 000 gpm)
• Heads to 100 m (325 ft)
• Speeds to 1800 rpm
• Impeller sizes from 300 mm (12 in) to 1625 mm (65 in)
VOP:
• Flows to 50 000 m3/h (220 000 gpm)
• Heads to 14 m (45 ft)
• Speeds to 1000 rpm
• Impeller sizes from 350 mm (14 in) to 2000 mm (80 in)
• Above- or below-grade discharge available
• Cast or fabricated discharge head depending on pump size
• Cast bowl assembly
• Impeller wear rings standard on VOP and optional on VOA
• Mechanically and hydraulically balanced design
• Independent pump axial bearing
• Tooth or flexible coupling
• Engine or steam turbine drive options
• Options
– Pullout design available on VOA model
– Case wear rings
– Packed gland or mechanical seal