When Protection Means Everything
← All apparatus Tanker

WaterKing Water Tanker Fire Truck

Tank options to fit your needs — NFPA-compliant dry-side tankers.

Overview

Heiman Fire’s WaterKing Tanker offers the highest quality craftsmanship combined with endless options for customizing each Tanker to fit your department’s needs. We exclusively build NFPA-compliant dry-side tankers for better quality and the many advantages over elliptical style. The dry-side design keeps the tank free-floating with a low center of gravity, so it won’t visibly sweat and there’s less chance of paint deterioration over the truck’s service life. You’ll also gain larger, more accessible compartments and the flexibility to add equipment later. With your choice of chassis, galvanneal, extruded aluminum, or poly body, 2,000 or 3,000-gallon capacity or custom, PTO or portable pump options, and single-to-triple dump valve configurations, every WaterKing is built around the way your department operates.

Built to order

Spec your WaterKing to your district.

Every rig is built to your RFP. Tell us what you run and we'll build a quote to it — usually same week.

Full specifications

Read it like a spec sheet.

Tank Design
G3 Fire Polypropylene
Tank Design
Up to 3000 Gallons
Body Material
1/8" Aluminum
Dump Valves
Single, Dual or Triple
Spec your rig

Build your WaterKing.

47 Heiman Fire Equipment · Built to order since 1947
Recent deliveries

WaterKing builds on the road.

Real Tanker rigs we've delivered — proof, not promises.

Maynard Fire Department

Maynard, MN
Tanker
Pump 500 GPM
Tank 3000 gal
Chassis Freightliner
Cab 2-Door
Delivered Jun 2025 Build · Chris Bornitz

Devils Lake Rural Fire District

Devil's Lake, ND
Tanker
Pump 400 GPM
Tank 3000 gal
Chassis Freightliner
Delivered May 2025

White Earth Fire Department

White Earth, MN
Tanker
Pump 500 GPM
Tank 3000 gal
Delivered Feb 2025 Build · Bryan Kershaw
Resources

Take the paperwork with you.

Common questions

Before you spec it out.

The number of dump valves — I has a single rear dump valve, II has two, and III has three.

The tank is mounted separately from the body, so it floats freely without being tied down, won't visibly sweat, and keeps a low center of gravity — and you get larger, more accessible compartments.

Standard capacities are 2,000 or 3,000 gallons, with custom sizes available.

PTO-driven pumps rated 750, 1,000, or 1,250 gpm, or compartment-mounted portable pumps in gas or diesel.

Galvanneal, extruded aluminum, or poly.

Ready to spec your WaterKing?

Every build is configurable. Tell us your department's needs and we'll build to them.