Graham 1PV & 2PV Series Replacements: NES NPV Series – Two Stage, Port Plate, Liquid Ring Vacuum Pumps
NES NPV Series Two-Stage Liquid Ring Vacuum Pumps are engineered for high-efficiency, deep vacuum applications requiring stable performance across a wide pressure range. With capacities from 400 to 2,900 CFM, these heavy-duty cast iron pumps are ideal for handling saturated gas mixtures, vapors, and light liquid carryover. Built for continuous-duty industrial use, the NPV Series offers low maintenance, efficient seal water management, and optional stainless steel construction for corrosive service in power, chemical, pulp & paper, and mining environments.
About NPV Series
Models: NPV1/2-62160, 62240, 72200, 72300, 72400, 82350, 82450, 82550, NPVE-2750, 2950, 21200, 21850, 22500
Power range: 20-100 HP
Capacity range: 160-2943 CFM
Max vacuum: 28.5″ HgV
MOC: Cast Iron/Stainless Steel 304/Stainless Steel 316
Features
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Two-stage design for deep vacuum applications.
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Standard cast iron construction.
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Optional 304 or 316 stainless steel construction for corrosive environments.
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Standard mechanical seals: John Crane 59U with Viton elastomer.
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Compact, base-mounted design reduces footprint and cost.
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Parts and repair kits readily available for fast servicing.
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Available as bare pumps or fully engineered systems.
Applications
Distillation, drying, degassing, filtration, crystallization, flare gas recovery, solvent recovery, power, environmental (vapor extraction, soil remediation)
