• Product image of an HPC Fire Whistle Free Flex Line gas connector displayed on a clean white background. The stainless steel corrugated gas hose features brass fittings on each end and is designed for standard, high, and ultra-high capacity fire pit systems. This flexible gas connector is engineered to reduce gas flow noise while allowing safe, durable connections between gas valves, burners, and fuel supply lines in outdoor fire features.
  • Close-up lifestyle installation view of an HPC Fire Whistle Free Flex Line gas connector attached to a fire pit control system inside a metal outdoor fire pit enclosure. A stainless steel corrugated gas flex line connects the gas valve assembly to the burner system, while a technician’s hand adjusts the control box. Additional pilot and ignition wires run alongside the flex line, illustrating a professional gas fire pit installation designed to reduce gas flow noise and provide reliable fuel delivery.
  • Detailed installation scene showing an HPC Fire Whistle Free stainless steel gas flex line connected to a fire pit control system and propane supply tank within a metal fire pit frame. Multiple corrugated stainless gas connectors route fuel between the valve assembly and burner components while a technician tightens the fitting by hand. Tools and wiring are visible in the enclosure, highlighting the flexible gas line’s role in high-capacity fire pit installations designed to prevent gas flow whistling.
1 3

Standard Capacity Tranquil Flex Lines by HPC Fire

Standard Capacity Tranquil Flex Lines by HPC Fire

gold proud authorized dealer badge

Ships in: 1-3 Business Days

SSC-W12

Length
$24.70 USD
$26.00 USD $24.70 USD
Sale Sold out
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

What's Included

  • (1) Standard Capacity Tranquil Flex Line Kit (Flex Line & 1/2" OD - 3/8" ID with 1/2" female pipe threads on one end and 3/8" male pipe threads on the other).

Specifications

Length:

  • 12"
  • 18"
  • 24"
  • 30"

Weight: 2 lbs

Material/Finish: Stainless Steel

Color: Stainless Steel

Fuel Type: Natural Gas and Propane Gas

Heat Output (BTUs):

  • 12" = 102K (NG); 163.2K (LP)
  • 18" = 93K (NG); 148.96K (LP)
  • 24" = 85K (NG); 136K (LP)
  • 30" = 77K (NG); 123.36K (LP)

Warranty: 1 Year

Assembly: Some Assembly and Retrofitting Required

Documents & Downloads

Shipping & Returns

Shipping:

  • This Product Ships Small Parcel (Ground). For more details, please see our full shipping policy.

Returns & Exchanges:

  • This product is eligible for returns within 30 days of delivery minus 20% Re-Stocking Fee & any applicable Shipping cost. For more details, please see our full return policy.

Disclaimers

Important Safety Notice:

  • This product includes chemicals recognized by the State of California as potentially causing cancer, birth defects, or other reproductive harm. Please handle with care and adhere to all safety instructions outlined in the product manual. For detailed information about Proposition 65 and its implications, please visit the official CA Prop 65 Warning website.

Sooting or Blackening:

  • Due to the nature of Gas Burners, Sooting or Blacking seen on media is normal and to be expected. For excessive sooting, please refer to owner's manual attached.

Experience quiet, efficient gas flow with the Standard Capacity Tranquil Flex Lines by HPC Fire. Designed for optimal performance, these whisper flex lines are perfect for creating a serene ambiance in fire pits and fireplaces without the distracting noise of gas movement. The staggered pitch every 2 inches helps eliminate the nuisance of whistling found during normal installs.

Available in lengths from 12” to 30”, they support BTU outputs ranging from 77k to 163.2k, making them ideal for standard gas setups. Featuring a 1/2” flare size and secure 3/8” MIP and 1/2” FIP fittings, these lines ensure smooth and safe connections for both natural gas and propane systems.

Built for comfort and reliability, they provide a peaceful and efficient solution for any fire feature.

View full details