Thunderstorm
Every detail, included.
Included features
- Choice of WATERAX pump with a 24 HP Honda engine
- 250-gal lightweight, corrosion-resistant G3 Fire copoly polypropylene tank -- limited lifetime warranty
- 1" booster reel with manual rewind
- 3-piece Elkhart valves with NH thread and ball control handles
- Tank-to-pump line with valve — 2" (high pressure) / 2.5" (high volume)
- 3-gal fuel tank with G3 Fire copoly mounting bracket
- Push/pull control rod for tank to pump
- Field-replaceable pump — quick-release pump end clamp for easy maintenance Stainless steel manifold
- Expandable discharge manifold with garden-hose discharge/drain — (1) 1.5" gated valve (HP) / 2.5" × (2) 1.5" gated wye (HV)
- Liquid-filled gauge on discharge manifold
See it at work.
Application photos, install detail, and field deployment.
Build your Thunderstorm.
WATERAX® pump.
Your choice of attack.
Every Thunderstorm runs a WATERAX pump paired with a 24 HP Honda on a powder-coated base — with a field-replaceable “HOT SWAP” pump end. Spec it high-pressure for reach and elevation, or high-volume to move water fast. Heiman has run WATERAX for three decades — stocked, serviced, and built into our apparatus.
High Pressure
For reach, elevation, and long hose lays. 2″ tank-to-pump line; expandable discharge manifold with (1) 1.5″ gated valve plus garden-hose discharge/drain.
High Volume
For moving water fast at the source. 2.5″ tank-to-pump line; 2.5″ × (2) 1.5″ gated wye to feed multiple attack lines.
Our go-to WATERAX pumps.
The pumps we spec on most Thunderstorm builds — and you can buy them on their own through our equipment catalog.
The wildland workhorse — high-pressure, lightweight, the pump departments build their initial-attack rig around. Our most-mounted Thunderstorm pump.
Buy onlineBest of both — combines pressure and volume for interface and wildland ops. Honda or Briggs Vanguard power on a low-maintenance drive-belt system. Ideal for slip-on and slide-in units.
Buy onlineJust need the pump?
Run these WATERAX pumps on their own — no slide-in required. Buy standalone from our equipment catalog, or talk to Kiela, our WATERAX liaison, to spec the right one.
- HOT SWAP pump endQuick-release clamp — field-replace the pump end without tearing down the unit.
- 24 HP Honda engineReliable gas power on a powder-coated base.
- Enclosed control panelOption: on/off start, low-pressure override, vernier throttle, choke, low-oil light & LED shield.
- Stocked, serviced, installedCertified WATERAX repair and parts on the shelf in Sioux Falls — days, not weeks.
Family-built. Field-proven.
Three generations of fire service
Heiman has been outfitting fire departments since 1947 — when our founder, Jack B. Heiman, started selling fire protection out of Aurelia, IA. Same family. Same standards.
Built in Sioux Falls
Every Thunderstorm is fabricated, assembled, and tested in our Sioux Falls shop. NFPA-compliant G3 Fire® MAGNITUDE copolymer polypropylene tanks. Limited lifetime warranty.
Service that's actually local
Our shop is your shop. Certified pump repair, SCBA testing, electronics diagnostics — all in-house. No shipping your unit back to California when something needs attention.
Ready to build yours?
Tell us what you need. We'll spec it, quote it, and build it.