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Prime Out


Dimensions: L:44" X W:44" X H:30"

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Prime Out is specifically designed for cleaning out concrete pumps. The bag’s direct-connect sleeve slides over the concrete hose to capture material in a durable waterproof, lined polypropylene sack.


  • Helps you adhere to environmental regulations
  • Strength-tested, tear resistant woven polypropylene
  • Fully-enclosed top keeps material contained during transport
  • Chute sleeve slides over the pump hose tip to minimize spillage
  • Chain-stitched waterproof liner prevents liquids from seeping
  • Reinforced over-lock stitching adds extra strength and structure
  • Extra sturdy, reinforced poly straps for forklift portability
  • Poly pocket for accurate project identification
  • Volume capacity 37.8 cubic feet / 283 Gallons / 1.4 cubic yards
SKU / Reorder#: POL4430Category:


  • All EnviroSacs are made of tough, tear-resistant woven polypropylene.
  • An inner waterproof liner safely captures and contains excess concrete or initial output.
EnviroSac Polypropylene WeaveStitch Design


  • Unique chute design slides over the hose end to capture prime-out and excess concrete.
  • Protects the jobsite while adhering to environmental regulations
EnviroSac Prime Out Sack POL4430 Hose SpoutStitch Design


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