The WATERAX OT-4NX is a modernized poly backpack pump that was conceived with the comfort and safety of the user in mind. The tank is made of lightweight yet rugged UV-resistant polyethylene making it easier to carry without compromising on durability. Ergonomics can be felt through the sleek contours of the tank, the integrated lumbar support, and the comfortable shoulder straps. 

The robust carrying handle makes for easy lifting and also serves as a port where the hand pump can be neatly docked. The large diameter filler neck allows convenient filling, cleaning access, and features a filler strainer to capture and prevent unwanted particles from entering the hand pump’s water supply.

The all-new brass hand pump design that features a forward grooved hand grip, a robust D-ring for clipping to the shoulder straps, and a rear pistol grip that makes operating the hand pump easier on the wrist and requires less effort than standard hand pumps


Height: 22.8” (580 cm)

Depth: 8.46” (215 cm)

Width: 15.8” (402 cm)

Capacity: 5.3 US gal (20 L)

Dry Weight: 8.5 lbs. (3.8 kg))

Wet Weight: 52.6 lbs. (23.9 kg)

Features and Benefits


  • Made of UV and corrosion resistant polyethylene
  • Integrated lumbar support
  • Durable brass elbow fitting for hose connection to tank
  • Carry handle also functions as storage for the pump
  • Comfortable and ergonomic
  • Comfortable shoulder straps
  • Delivered assembled
  • Water level indicators (US Gallons & Liters)
For more information about this product or other Waterax products, please visit www.waterax.com

Your Price: $219.00
Item Id:OT-4NX

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