Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

Caleffi 6686F5S1A 668S1 Series TwistFlow Radiant Manifold Assembly 6 Loop 1"

SKU
CAL6686F5S1A

In Stock. Ships in 1-7 Business Days.

Click Here for Ground Shipping Cost & Transit Time
Retail : $1,025.00 - $307.5 =
$717.50 You Save (30%)
- +
main product photo

Product details

Pre assembled radiant manifold consisting of return distribution manifold complete with built in shut off valves suitable for thermo electric actuator and supply distribution manifold complete with built in sight flow gauges and balancing valves with 2" gauges (30° - 210°F scale).

FEATURES
  • 1" or 1¼" NPT inlet ball valves
  • Max working pressure: 150 psi
  • Max working temp: 180°F
  • Max peak temp: 200°F
  • Loop Cv: 1.23 combined supply and return ports
  • Flow meter scale: ¼ - 2 gpm
  • Outlet center distance: 2"
Caleffi
See All Caleffi Products

Specification Sheet

Product Specifications Brochure Installation Manual
Basic Information
MPN ? Manufacturer Part Number 6686F5S1A
UPC / GTIN 8016615244021
Manufacturer Caleffi
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. 668S1 Series
Dimensions and Measurements
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 5"
Length (Inches) ? The distance of the product's longest side, measured in inches. 27.5"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 17.75"
Weight ? Weight 19.60
Characteristics and Features
Material ? The material(s) used in the construction of the product. Brass
More from Caleffi
  1. Caleffi 553542A 553 Series Auto Fill Boiler Feed Valve 1/2"NPT Inlet
    Caleffi 553542A 553 Series Auto Fill Boiler Feed Valve 1/2"NPT Inlet
    Retail : $155.00 - $55.8 =
    $99.20 You Save (36%)
    Add to Compare
  2. Caleffi 551007A 551 Series Discal Air Separator 1-1/4" NPT Female
    Caleffi 551007A 551 Series Discal Air Separator 1-1/4" NPT Female
    Retail : $332.00 - $119.52 =
    $212.48 You Save (36%)
    Add to Compare
  3. Caleffi 521519A 521 Series Mixcal 3-Way Mixing Valve 3/4" Sweat with Temp Gauge
    Caleffi 521519A 521 Series Mixcal 3-Way Mixing Valve 3/4" Sweat with Temp Gauge
    Retail : $299.00 - $107.64 =
    $191.36 You Save (36%)
    Add to Compare
  4. Caleffi 535051A 5350 Series Autofill 3/4" Union NPT with Pressure Gauge
    Caleffi 535051A 5350 Series Autofill 3/4" Union NPT with Pressure Gauge
    Retail : $191.00 - $68.76 =
    $122.24 You Save (36%)
    Add to Compare


By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.