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Bob® C7800 Series
Copper Water Heater Connectors

IAPMO cUPC® Listed for USA and Canada
Since most local codes now require the use of isolating nipples anyway, connector manufacturers are no longer required by the ASME A112.18.6 Standard for Flexible Water Connectors to be concerned with built-in isolators to protect the water heater.

However, what about protecting the connector?

When the humidity is up, moisture condenses on the outside of connectors which can cause electrolysis where dissimilar metals are in direct contact. While the water heater may be safe, brands with no isolators or "internal isolators" in the waterway overlook the direct metal to metal contact between the Brass Nut and the Copper Tube, putting the connector at risk from external corrosion caused by electrolysis.
  • Our proven External Dielectric Isolator on most models completely electrically isolates the 3/4" FIP brass nut from the copper tube. In addition, the copper tube is effectively electrically isolated internally from the water pipe or fitting by our super tough and resilient nitrile seal washer. Unlike brands with no isolators or "internal isolators", our design helps to protect both the water heater AND the connector.
  • The unique tapered design of our seal prevents the washer from "squirting" out from under the pipe end during installation. They're flexible to allow for irregularities in the pipe end, yet tough to help resist "punching" through.
  • Design Certified to Meet ALL Pressure Drop and Flow Requirements
  • Made in USA
  • 7/8" OD Corrugated Copper Tube Connectors
C7800 Series TechSpecs
Models: (xx denotes length)
C78xxA C78xxBD C78xxBPX16 C78xxFM C78xxM12
C78xxAD C78xxB16 C78xxBS C78xxFM5 C78xxMM
C78xxAS C78xxBPX C78xxFF C78xxM C78xxMM5
C78xxB C78xxBPXD C78xxFF5 C78xxMD
Lengths:
12" 15" 18" 24"
Application:
  • Water Heaters and Water Softeners
  • General Use Water Connectors
  • For use with water in accessible locations only
Design Standards:
  • IAPMO cUPC® Listed for USA and Canada
  • Uniform Plumbing Code® & International Plumbing Code® Recognition
  • NSF-61
  • ANSI/ASME A112.18.6/CSA B125 Standard for Flexible Water Connectors
  • Solder Joint Ends: ANSI/ASME B16.22
  • PEX Barb Ends: ANSI/ASTM F1807
Material:
  • Tube: UNS# C12200 Copper Tubing per ASTM B68
  • Nuts & End Fittings: UNS# C36000 Brass
  • External Sleeve Isolator: Nylon 6/6 (for external dielectric models)
  • Washers: NSF grade Nitrile Rubber (NBR).
Operating Characteristics:
  • Pressure: 125 PSI Maximum.
  • Temperature: 40 - 180°F.
  • Pressure Drop: Less than 4 PSI
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