Sprayer Depot Blog

Electric diaphragm pumps, like ShurFlo and Delavan, are widely used in a variety of spraying applications. They are inexpensive, offer low-cost maintenance, and can effectively perform many jobs with ease. They are commonly used in spot sprayers, small skid sprayers and other spray equipment where spraying long distances is not needed. Due to their pressure rating limitations, electric pumps are not the best choice for spraying tall trees, roofs or high elevation areas. Customers looking to reach great heights will be better served by using a gas engine driven pump.

Electric pumps are great for greenhouse spraying to reduce fumes, or for quiet applications where noise levels could pose a problem such as spraying early morning around neighborhoods or through quiet zones. 

Delavan PowerFLO Electric Diaphragm Pumps

In case you are not familiar with this brand of pumps, let’s share a brief introduction. Delavan is a Minnesota based company, which manufactures electric diaphragm pumps, roller pumps, centrifugal pumps, and hydraulic cylinders.

Centrifugal pumps are high flow, low-pressure pumps that can deliver pressure ratings of anywhere from 0 to 150 psi and flow rates up to 440 gpm. How exactly do centrifugal pumps work? Well, if you are feeling a bit technical, here’s a simple explanation: On a centrifugal pump, the liquid enters through the middle into an impeller that forces the liquid into the outlet of the pump.

Centrifugal pumps are known to be heavy-duty and durable due to their fewer parts and minimum wear surfaces. Another great feature is they are easy to clean and maintain.

They can be used in a variety of applications including agricultural and industrial spraying. They come in different materials such as cast iron, stainless steel, and even polypropylene, making them capable of handling a variety of liquids and chemicals. They are mostly used with water, insecticides, herbicides, wettable powders, emulsives, and liquid fertilizers just to name a few. Some centrifugal pumps, specifically those made from polypropylene, can handle acids and other corrosive liquids.

Centrifugal pumps can be powered by different methods, the most common include: 

Tractor/PTO

Series 9000 - 9400 Belt-Driven Centrifugal Pumps

This series is specifically designed for easy use with tractor mounted sprayers. They can handle big, high-capacity spraying jobs with ease and are easy to install/uninstall.

Pressure ratings: 62 - 104 psi

Flow rate: 82 - 140 gpm

Speed: 600 or 1000 rpm

Gas Engine

Series 1500 Gas Engine-Driven Centrifugal Pumps

As their name describes, this series can be mounted onto a gas engine. They are available with or without a mounting base for easy and secure installation depending on your engine. Need a pump that can tackle more than just spraying? Fill tanks, water seed beds and transfer liquids fast and efficiently with Hypro’s centrifugal pumps.

Pressure ratings: 65 - 140 psi

Flow rate: 98 - 150 gpm

Speed:

Hydraulic Motor

Pressure ratings: 120 - 180 psi

Flow rate: 100 - 214 gpm

Hydraulic ports: 1/2" NPT inlet, 3/4" NPT tank

There are a lot of other options when it comes to spray pumps, each better-suited for a variety of applications. Stay tuned for future posts on how to service and troubleshoot your Hypro centrifugal pump, so don't forget to subscribe to our blog.

Hypro piston pumps are designed for a variety of applications. They are a common component in high-pressure washers for industrial and agricultural cleaning jobs. Piston pumps are also a great option as a sprayer pump as they are able to handle a wide range of chemicals.