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Lead Free* MasterSeries In-Line Double Check Detector Assemblies (Type II) - Large Diameter - LF856

Unique ref.: Double-Check-Detector-Assemblies-Large-Diameter-LF856
Brand: Febco
Product family: Backflow Prevention
Product group: Reduced Pressure Detector Assemblies
Date of publishing: 2019-05-16
Edition number: 1
Type: Object (single object)
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MasterSeries LF856 Lead Free* double check detector assemblies are designed to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements for non-health hazard service applications such as irrigation, fire line, or industrial processing. They feature a ductile iron body. Maximum working pressure: 175psi (12.1 bar).


  • Primarily used for protection of drinking water systems and fire sprinkler systems
  • Winterization feature with disc retainers and valve body drain ports
  • Protects drinking water supplies from dangerous cross-connections
  • Inline serviceable assembly requires no special tools

Outlet Connection Size

  • 2 1/2 IN
  • 3 IN
  • 4 IN
  • 6 IN
  • 8 IN
  • 10 IN

Inlet Shutoff Valve Type

  • No Shutoff Valve
  • Outside Stem And Yoke Gate Valve

Inlet Connection Size

  • 2 1/2 IN
  • 3 IN
  • 4 IN
  • 6 IN
  • 8 IN
  • 10 IN

Material main: Cast iron
Material secondary:
Designed in: United States
Manufactured in: United States

BIMobject Category: Plumbing - Valves
IFC classification: Valve
UNSPSC name: Valves
UNSPSC code: 401416
Uniclass 1.4 Code: L7136
Uniclass 1.4 Description: Valves
Uniclass 2.0 Code: PR-94-94-xx
Uniclass 2.0 Description: Backflow Prevention Devices
Uniclass 2015 Code: Pr_65_54_95_05
Uniclass 2015 Description: Backflow prevention devices
NBS Reference Code: 94-94-xx
NBS Reference Description: Backflow Prevention Devices
CSI MasterFormat 2014 Code: 40 05 67.13
CSI MasterFormat 2014 Title: Reduced-Pressure Zone Backflow Preventers for Process Service
OmniClass Number: 23-27 31 11
OmniClass Title: Backflow Preventors
CSI UniFormat II Code: D20
CSI UniFormat II Title: PLUMBING
This product is available in:
North America
  • Canada
  • United States

BIMobject SEEK Properties

Plumbing - Valves

Name Value
Connection Size 2 1/2" — 10"
Plumbing Fixture Type Double Check Detector Assembly
Working Pressure 175 psi