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Reduced pressure principle backflow preventer for fire protection systems (RPF)

  • CSA: B64.4.1
  • ASSE: 1047
  • Highest hazard protection: high or severe
  • Back pressure resistant: yes
  • Continuous pressure resistant:  yes
  • Field testing required: yes

Overview/Benefits

  • Provide reliable protection from both back siphonage and back pressure for high risk fire protection systems.
  • Are generally used in locations where an air gap is impractical.
  • Leaks are easily detected in case of failure.
  • Should not be installed below ground level, in a pit or a vault.
  • Requires access to a floor drain.
  • For models of 2 1/2 ″ and more, assembly with OSY (Open Stem & Yoke) or butterfly valves ready to receive added supervision.

Application examples

Buildings or sites where there are chemicals in the sprinkler lines:

  • Terminal
  • Chemical factory
  • Petroleum product storage
  • Sprinkler line where there is a risk of freezing with glycol gel

Models

WILKINS

  • 375 & 375A
  • 375AST &375ASTDA
  • 475
  • 975XL & 975 XL2U
  • 375ADA
  • 475DA

CONBRACO

  • RP 40S
  • RP 4A
  • RPLF 4A & RPLF 4An

WATTS

  • 009 & LF009
  • LF909
  • 919 & LF919
  • 957 & 957 RPDA
  • 994 & 994 RPDA
  • 909RPDA

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