Griswold ANSI Centrifugal Pumps Ideal for Oilfield Applications

Contributed by: PumpScout Staff

As a leading manufacturer of centrifugal pumps, Griswold Pump Company offers its 811 Series ANSI Centrifugal Pumps to handle one of the most crucial activities in oil and natural gas production: Leased Asset Custody Transfer (LACT). Sometimes compared to a metaphorical “cash register” between a selling and buying company, a LACT unit automatically measures, samples, and transfers oil from a lease location into the oilfield through a pipeline, where it is then transferred to a terminal or end-user.

LACT units (either stationary or skid-mounted) rely on the pump that transfers oil from the owner’s storage vessel into the buyer’s to operate effectively. Griswold’s 811 Series pumps meet the challenges associated with LACT operations, performing reliably in a variety of extreme conditions. The company’s centrifugal pumps are capable of completely transferring oil from a tanker to a client’s storage tank, as well as transloading product from a tanker to a railcar.

Engineered for flexibility, efficiency, and durability, Griswold’s 811 Series ANSI process pumps satisfy the diverse needs of a LACT operation. The pumps’ wear area between the case and impeller is two times that of a closed-impeller design. The 811’s open-impeller design minimizes concentrated wear by balancing the hydraulic thrust load and reducing stuffing-box pressure. This translates to maximum performance, simplified maintenance, extended pump life, and reduced repair costs for the customer.

Griswold’s 811 Series pump casings can be constructed with ductile iron, CDM4Cu, Alloy 20 or stainless steel; a no-bake casing process ensures smooth, precise, and superior finishes. The pumps are available in a full range of sizes with flow rates up to 4,000 gpm (15,142 L/min) with the ability to operate in temperatures up to 500oF (260oC). Standard features include self-tightening impellers, the ability to externally adjust the pump’s clearance, and power frames. These features contribute to maintained peak efficiency and a 33% stronger pump than competitive models.


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