Delavan 5850-111E-SB 12V Diaphragm Pump, 5.0GPM, 60PSI, NSF Certified, Continuous Bypass Design

The Delavan PowerFLO™ 5850 Series Diaphragm Pump is engineered for efficiency and reliability. This model, specifically the 5850-111E-SB, operates on 12V DC power and delivers impressive performance with a maximum flow rate of 5.0 gallons per minute (GPM) and a maximum pressure of 60 pounds per square inch (PSI). It’s designed with a unique bypass mechanism, allowing for continuous operation, making it ideal for various applications.

One of the standout features of the Delavan 5850 series pump is its certification to NSF/ANSI Standard 61 and 372. This means it meets stringent health safety standards, ensuring that it is suitable for drinking water systems. The pump is proudly made in the USA and undergoes rigorous factory testing to guarantee quality and performance.

With a robust 12V DC permanent magnet motor, the Delavan diaphragm pump is totally enclosed and non-ventilated, promoting durability. The leads are 14 AWG, measuring 12 inches long, and equipped with a Delphi weatherproof electrical 2-pin connector for secure connections. The pump operates at a maximum of 20 amps, and users should monitor the duty cycle to maintain optimal performance.

The pump’s impressive design includes a 5-chamber positive displacement mechanism that allows it to be run dry without damage and provides excellent self-priming capabilities. It can handle liquid temperatures up to a maximum of 140°F, with priming capabilities reaching up to 14 feet. The inlet and outlet ports are sized at 1/2 inch FNPT, providing flexibility in installation.

Delavan recommends purchasing a heat sink for the motor if the pump is to be used continuously, especially in bypass applications. This precaution ensures that the pump operates efficiently and prolongs its life. Additionally, the pump is packaged in a compact box, making it easy to transport and store.

In conclusion, the Delavan 5850-111E-SB diaphragm pump stands out as a reliable choice for those seeking a powerful, NSF-certified pumping solution. Its combination of advanced features, quality construction, and continuous operation capability makes it an excellent investment for both residential and commercial applications.