A high pressure, high visibility, large diameter attack/supply hose with a 300 psi service test pressure.

Heat and chemical resistant, the nitrile/PVC through-the-weave design allows the hose to expand under pressure — decreasing friction loss and increasing water flow.

The thin rib rubber outer cover offers increased resistance to impact, punctures, and abrasion. Reliable, maintenance-free, and no drying required, make this the ideal supply hose for busy municipal fire departments. NFPA compliant and UL Listed.


  • High visibility, high pressure large diameter supply line
  • Raised thin rib construction resists cuts, punctures, impact, and abrasion
  • Through-the-weave design for increased durability
  • Heat, chemical, and ozone resistant
  • *10-year manufacturer's warranty


Diameter Part No. Service Test Proof Test Burst Test Bowl Size Weight Uncoupled
4" RC40-600 300 psi 600 psi 900 psi 4¼" 0.93 lbs/ft
5" RC50-600 300 psi 600 psi 900 psi 5¼" 1.25 lbs/ft

UL Listed to 200 psi

  • Pro-Flow HP is made from 100% high tenacity synthetic polyester yarn, circularly woven, and completely protected by a through-the-weave extruded PVC/Nitrile rubber, forming a single homogeneous construction without the use of glues or adhesives of any type.
  • Pro-Flow HP is guaranteed to withstand 10,000 cycles on the Taber Abrasion Machine (H-22 Wheel: 0.5 kg) without exposing the liner.
  • Pro-Flow HP coupling options are as required by purchaser, expansion ring threaded, Storz clamp ring, etc.
  • Pro-Flow HP meets or exceeds the requirements of NFPA 1961.

Manufacturer's Warranty Information

*Pro-Flow HP hose shall carry a 10-year manufacturer’s written warranty against defects in materials and workmanship


4” thru 6” hose is supplied with Storz aluminum couplings

Custom lengths and special threads are available; please call us at 800-759-3473 for pricing.

Freight Charges: After you place your order, we will call or email you with the freight charge. If the freight charge exceeds your expectations, you may ask that your order be canceled. The maximum freight charge for your order for  Key Hose will be $125 or less.

Spec Sheet


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Key Fire Hose Pro-Flow HP High Pressure High Visibility Large Diameter Hose- Hi Vis Green

  • Price based on selected options.

  • Available Options

    Delivery/Shipping Availability: Item ships directly from manufacturer. Ships in approximately 6-8 weeks.

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