Positive Displacement Pumps

DistributionNOW stocks and sells a full line of positive displacement pumps from top manufacturers, as well as VFD control systems. These pumps deliver constant flow rates at variable system back pressure conditions. Many of these products are ideal for high-viscosity applications and shear-sensitive liquids.

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Browse Products & Services

DNOW provides both sales and service/repair for a wide wide variety of positive displacement pumps. Our product line is offered through our Odessa Pumps and Power Service divisions, use the filter below to see all DNOW products or those specialized by Odessa Pumps and Power Service.

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Air-Operated Double Diaphragm (AODD) Pumps

AODD pumps are ideal for transferring a wide variety of fluids, from clean, light viscosity to medium viscosity.

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Gear Pumps

Gear pumps convert mechanical power into hydraulic energy to provide a continuous and smooth flow of liquid.

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Multiplex Reciprocating Plunger & Piston Pumps

Pumps ideal for pressure surges which are inherent with the reciprocating action of piston and plunger pumps.

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Progressive Cavity Pumps

Ideal for conveying low to highly viscous, aggressive, or abrasive substances at low pulsation rates.

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Sliding Vane Pumps

Ideal for maintaining a set flow rate for constant flow applications and higher viscosity fluids.