Frequently Asked Questions



Can I drop by Randco Tank's Facility for a Tour or to check on a Current Project/Build?

We welcome customers to check in on their Project by Phone/Email.

If you would like to stop by In-Person, we are able to accommodate with a scheduling basis only by Calling the Front Office. Drop-In Customers may not be tended to right away, as key personnel may be out fo the office or taking care to other customers projects. We strongly encourage Communicating with us before making a trip. Call 1-360-425-9100  and press (#1) to schedule your visit!

How long will Randco Tanks hold my completed Project/Build and accompanying items at their facility?

Upon Completion,  a Customers Project/Build and accompanying items Must Leave our facility within 30 Days.

After 30 Days, there may be a charge to store your items on our property. We Encourage Coordinating with the Front Office for pickup of your items as soon as possible. We appreciate it!

What are your Parts Shipping Cut Off Time and General Lead Time?

General lead time for shipping out In-Stock Items is 24 – 48 Hours. However, we do our best to ship the same day.  Our Cut Off time for Same Day Shipping is 2 PM PST.

Orders will be processed Monday – Friday During Business Hours  (8 am – 4:30 pm PST)

NOTICE: Due to the COVID-19 Pandemic, Parcel Carriers and LTL Carriers such as UPS/Fedex are not guaranteeing shipping dates.

What are your Pick-Up & Drop-Off Hours for a Customer Chassis?

We are able to accommodate scheduled drop off of customers chassis and items between 8AM – 2:30PM PST. Please communicate with the Front Office to coordinate drop off of customer items.

Can I Ship To My PO Box?

Not at this time through our website. Currently, we only use FedEx to process online orders for their service and pricing. If you need to ship through UPS, USPS, or an LTL service for a larger load, Call Us at 360-425-9100 or Email Us at

How Wide can you Manufacture a Tank?

Randco Manufactures Water Tanks in Many different Widths. We can make any Tank 80″ – 102″ with the Randco Elliptical Profile.

Of course, these widths are just for our Elliptical Water Tanks, Our Slide-In Water Tanks have different Specifications.

Also, 102″ is the Widest we can build a tank per DOT Specifications.

If you require a Special Width, Contact Us so we can consult with you to find the dimensions you need.

How do I find out how much my Randco Tank Weighs?

To find the Weight of your Randco Tank, follow the steps below:

  • Standard Profile – 300 lbs Per Foot *Approx*
  • Medium Profile – 275 lbs Per Foot *Approx*
  • Low Profile – 250 lbs Per Foot *Approx*

If you have any questions concerning the Weight of your Randco Tank, Contact Us so we may be of Further Service.

How many Profiles (Tank Height) do you guys Manufacture?

Here are our Standard Profiles:

  • Standard Profile Tank – 60″ High
  • Medium Profile Tank – 54″ High
  • Low Profile Tank – 48″ High

If you require a Special Height, Contact Us so we can consult with you to find the dimensions you need.

Where do I place the Water Tank on my Truck?

We use a 2/3rd 1/3rd formula for a tandem axle truck. The front of the tank is 2/3rds forward of center of tandem and 1/3rds rear of

center of tandem. (Example: 15’ tank would be 10’ forward and 5’ back from center of tandem or trunnion) We like to see 4″-6” of gap

between the cab or exhaust, whichever sticks out the most. For the Single Axle Truck, we like to use center of axle to the rear of the

tank is 3’ and the rest forward, (Example: if the tank is 10’ long, the tank would set 7’ forward and 3’ back of center of axle.

Note: If the truck needs to weigh at or under the axle ratings, these measurements may not work. We are able to work on a case by case basis if you need to achieve these weight ratings.

How much Weight and what Size Tank can I put on my truck?

Tank, pump, plumbing, and water is 10 pounds per gallon. Example: 2500-gallon tank is going to put 25,000 pounds on your truck.

Note: A typical single axle medium-duty truck is around 10,000 lbs + or –

A tandem axle truck is 17,000 pounds to 23,000 pounds + or –. Depends on the specs of the truck. Using these numbers can get you an approximate weight.

I have a PTO (power take off) already, can I just use the one I have?

Depends first if its remote shaft or hydraulic flange style and what style of pump you are using.

We can help you determine this on a case by case basis to try and use what you already have. In most cases we could not use your PTO (power take-off)

I have a hydraulic system on my truck already, is it cheaper to use it verses using a drive line style driven pump?

It’s always cheaper to go to a Drive Line driven PTO/pump system, that’s even putting a new PTO on the truck. Why? Because we

have to go to an open-loop system which is more costly. The cost of a Hydraulic Pump and B-flange adapter would exceed the cost of

the PTO and drive-line alone.

Note: Hydraulic drive is a nice way to go. Even though it is less maintenance, it will be less cost-efficient.

What are the standard winterizing procedures for my water truck?

Standard Procedures for winterizing most standard water trucks is as follows but not limited to:

    • Drain your plumbing and water pump: Open all drain valves halfway, DO NOT keep the drain valves all the way closed or open. If the drain valve is closed, water is trapped inside the pump/plumbing, creating the potential for damage. If the drain valve is open all the way, water is trapped in the ball compartment (especially for ball valves) freezing and expanding the trapped water, creating potential damage.
    • Close the manway lid if the tank system has one. If the manway is open or has been kept open, this allows the rainwater to refill the plumbing. If there is no manway cover, or if the cover is left open or if there is a cover, all drains must remain open (opened halfway as noted above) to prevent water from refilling the system and freezing and creating damage.


Have a Question?

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