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Air-Operated Diaphragm Pump, 13 GPM Capability, 1/2 Inch NPT Ports,

Description & Features

The Air-Operated Diaphragm Pump with a 13 GPM capability and 1/2 inch NPT ports offers robust performance in fluid transfer applications. This pump features a patented "Unbalanced" air valve design ensuring reliable operation by resuming pumping action promptly.

Designed with bolted construction this pump provides a superior seal for safer handling of various fluids. The absence of rotating or sliding seals minimizes the risk of leaks and failure promoting durability and longevity.

With a maximum operating pressure of 100 PSI this pump meets industrial performance standards. Ideal for demanding environments it efficiently supports various fluid pumping needs.

MPN: 66605J-311

Supplier Part Number: 66605J-311

Specifications

Brand Ingersoll-Rand Special Quotes	Brand Ingersoll-Rand	Pack Size 1.00	UOM EA	Supplier Part Number 66605J-311	Alternate Part Numbers Alternate Part Number C1BX83	Product Weight 9.00 lbs

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Product Questions & Answers (2)

Question by: Joyce H on Jan 26, 2026, 12:49 PM

pump keeps stalling out mid-job on my old setup, would something like this with that unbalanced air valve fix that problem?

Answer by: Customer Support on Jan 27, 2026, 8:40 PM

Stalling mid-cycle is exactly the kind of issue that unbalanced air valve design addresses. Most diaphragm pumps that stall do so because the valve loses the pressure differential it needs to shift. The patented unbalanced air valve on this ARO unit is built specifically to restart pumping action reliably when called upon, so dead-stall situations are far less likely to leave you stuck mid-job.

Question by: Scott S on Jul 30, 2025, 11:40 AM

Reckon this here diaphragm pump can handle somethin' thicker than water without boggin' down?

Answer by: Customer Support on Jul 31, 2025, 11:42 AM

Bolted construction provides a superior seal, making it safer for handling various fluids, though extremely viscous fluids will reduce flow rate.