How to Choose Your Pump
Connection Type
NPT VS GRV
Seal Type
Grooved vs. Threaded Pump Connections
Grooved and threaded pumps perform the same basic pumping function. The difference is in how the pump connects to the truck plumbing.
A grooved pump uses grooved couplings, which makes installation, alignment, removal, and future service much easier. Grooved connections are a good choice for water trucks because they are faster to assemble, easier to take apart, and better suited for larger plumbing systems that may need maintenance or replacement parts later.
A threaded pump uses FNPT pipe thread connections. This is a good option when the truck is already plumbed with threaded pipe or fittings. Threaded pumps can work well, but they may take longer to install and can be harder to remove later if the threads become tight, damaged, or seized.
For most water truck applications, grooved connections are the preferred option unless you specifically need threaded connections to match the existing setup.
Rope-Packed vs. Mechanical Seal Pumps
Rope-packed and mechanical seal pumps perform the same basic pumping job. The difference is how the pump shaft is sealed.
A rope-packed pump uses packing material around the shaft. This style is simple, durable, and easier to service. It is a good choice for water trucks, construction use, dirty water, and rough working conditions. Rope-packed pumps drip slightly during operation, which is normal and helps lubricate and cool the packing.
A mechanical seal pump uses a mechanical seal around the shaft. This style is designed to run with little to no visible leakage when the seal is in good condition. Mechanical seal pumps are a good choice for cleaner-water applications or customers who want less dripping, but they can be more sensitive to dirt, running dry, or harsh conditions.
For most water truck applications, rope-packed pumps are the preferred choice because they are rugged, serviceable, and better suited for heavy-duty field use. Mechanical seal pumps are best when cleaner operation and reduced leakage are more important.
Rotation
Clockwise vs. Counterclockwise Pump Rotation
Pump rotation is identified by looking directly at the pump’s drive shaft from the shaft end.
Clockwise rotation (CW) means the shaft turns in the same direction as the hands of a clock. Clockwise pumps are generally used on water trucks equipped with automatic transmissions.
Counterclockwise rotation (CCW) means the shaft turns in the opposite direction from the hands of a clock. Counterclockwise pumps are generally used on water trucks equipped with manual transmissions.
Getting the pump rotation correct is essential for proper pump performance.
PTO Driven Pumps
Powered directly by your truck engine's Power Take-Off. Best for heavy-duty daily operations requiring maximum reliability and power.
Pump Types & Applications
KNOW YOUR OPTIONS
Self-Priming Pumps
Designed to lift water from sources below the pump level. Essential for filling trucks from ponds, rivers, or low-level tanks.
Pump Cross Reference
Trying to replace an existing Berkeley pump with Transporter's Choice?
Quickly match your existing Berkeley pump specifications to the equivalent Transporter's Choice models.
Pump Identification FAQ
Common questions about choosing and identifying the right water pump for your truck fleet.
How do I find the model number on my existing pump?
Most industrial pumps have a metal identification tag riveted to the pump housing or bracket. If the tag is missing, you can often identify the pump by whether its connections are threaded or grooved and by checking its rotation. We can help with every step.
What is the difference between CCW and CW rotation?
Rotation is determined by looking directly at the drive-shaft end of the pump. Clockwise (CW) or counterclockwise (CCW) rotation must match your truck's PTO or drive engine to prevent damage and ensure proper flow. Clockwise is generally used with an automatic transmission, while counterclockwise is generally used with a manual transmission.
Should I Choose a Mechanical Seal or Rope Packing?
Choosing between rope packing and a mechanical seal comes down to how you use your pump. If you’re working in tough conditions with dirty or abrasive water and want something simple that you can adjust and repair in the field, rope packing is a reliable, cost-effective choice—even though it requires regular maintenance and allows slight leakage. On the other hand, if you want a cleaner, more efficient setup with little to no leakage and less day-to-day maintenance, a mechanical seal is the better option, but it comes with a higher upfront cost and is more sensitive to running dry or debris in the water.
Why should I choose Transporters Choice or Berkeley pumps?
These brands are industry leaders known for durability in rugged water truck applications. They offer excellent parts availability, making long-term maintenance much easier than with generic alternatives.
Need Help Identifying Your Pump?
If you're still unsure which pump is right for your water truck, our experts are here to assist. Send us your specs or a photo of your current setup, and we'll help you find the exact replacement or upgrade you need.